July 2 Patch Notes

Here are the patch notes for MapleStory : Idle RPG on July 2.

🔸 New Content: World Arena

New content has been added where battles are conducted across all servers within the same region.

The detailed rules for the World Arena are as follows.

• Participation Requirements
  • You can participate after clearing the Chapter 16 Boss.

    • If you clear the Chapter 16 Boss after the World Arena opens, you can participate in the ongoing season.

  • You can participate even without joining a Guild.

• Schedule (Server Time)

  Season 1	2026-07-07 12:00:00 - 2026-07-11 22:00:00
  Season 2	2026-07-14 12:00:00 ~ 2026-07-18 22:00:00
  Season 3	2026-07-21 12:00:00 ~ 2026-07-25 22:00:00

• How to Play

  • World Arena battles last for 5 days.

  • 10 entry tickets are recharged daily at midnight (Server Time), and the daily recharged tickets cannot exceed the maximum (10 tickets).

  • If all entry tickets are used, you can recharge 3 tickets using Red Diamonds.

    • The Red Diamonds required for recharging increase from 100 to 500 depending on the number of daily recharges. After that, it will remain fixed at 500.

  • Opponents with similar ranking scores are displayed in the matchmaking list. You can refresh the list to find new opponents.

  • You can select 1 opponent from the opponent list to challenge.

  • During a battle, you can select 1 of the opponent's equipped Artifacts to block its special effect.

  • The [Soul Pouch] Artifact effect also applies in World Arena.

  • Ranking scores change based on battle results. The amount of score gained or lost is adjusted based on the defender's World Arena preset combat power at the time of matchmaking. The higher the defender's combat power, the greater the score adjustment for attack/defense outcomes.

  • The base score at the start of a season is 1,000. If the score drops below 1,000 due to losing attack/defense battles, the score will decrease by a fixed 10 points.

  • Defense success points earned from the same opponent are capped at 5 times per season.

  • Of all opponents defeated on the same day, up to 5 players with the highest combat power are recorded daily in the TOP 5.

  • If you win a new battle against an opponent already in the TOP 5 and that player's combat power has increased, the TOP 5 record is also updated.

  • Winning against an opponent recorded in the TOP 5 grants a significant bonus.

  • The TOP5 is finalized at midnight each day (Server Time), the score is updated each time you defeat an opponent with higher combat power until it is finalized.

  • When recorded in the TOP 5, the bonus score multiplier applied compared to the score earned on victory is as follows:

    Day	TOP 1	TOP 2	TOP 3	TOP 4	TOP 5
    Day 1 & 2	100x	80x	60x	50x	40x
    Day 3	150x	120x	100x	75x	50x
    Day 4	250x	200x	120x	100x	75x
    Day 5	600x	450x	300x	225x	150x

• Battle Rules

  • The damage formula follows the same rules as the Arena, but with a different content-specific constant applied, resulting in 80% of the damage dealt and received compared to the Arena.

  • The effects of recovery and barriers applied in battle are reduced by half.

  • Potion effects are reduced. However, the final healing amount is the same as in the Arena/Colosseum due to the reduced healing effect.

  • The duration of damage immunity and basic attack damage immunity effects applied in battle is reduced by half.

• Reward Information

  • At the end of the season, tiers are determined by ranking score in descending order, and rewards corresponding to each tier are distributed.

  • Guild members' scores will be added to the Guild score, and Guild rewards based on Guild ranking will be distributed.

  • If you join a Guild after the season has started, you can still participate in the content, but your score will not contribute to the Guild score, and you will not receive Guild rewards.

  • If you leave the Guild during the season, you will be excluded from the Guild score and cannot receive Guild rewards.

  • Guild ranking and individual ranking rewards are only distributed to those who have participated in World Arena attacks or defenses at least once.

• Individual Reward Information

• Guild Reward Information

🔸 New Party Quest - Romeo and Juliet

• A new Party Quest has been added.

  • The Romeo and Juliet Party Quest is accessible after clearing the Chapter 22 Boss, with Easy/Hard/Very Hard difficulties unlocked upon clearing the Chapter 22/27/32 Boss respectively.

  • In the Romeo and Juliet Party Quest, you can obtain a Ring equippable in the 2nd Ring slot.

  • Clearing the Romeo and Juliet Party Quest 50 times will earn you a new Medal.

    • Medal: [Magatia's Peacemaker] (Inventory Effect: Main Stat +30)

🔸 New Equipment Slot - Ring 2 Added

A 2nd Ring slot has been opened. Rings equippable in this slot can only be obtained through the “Romeo and Juliet Party Quest”.

• Main Options: Attack, Max HP, Main Stat

• Available Sub Options

  • Attack / Max HP / Defense / Max MP% / Evasion / Accuracy / Critical Rate / Critical Damage / Boss Monster Damage / Normal Monster Damage / Skill Damage / 1st · 2nd · 3rd · 4th Skill Level

  • The available option list for the Ring is the same regardless of difficulty.

• The special stat available in the Potential option of this slot is [Basic Attack Damage]. It can be obtained through rerolling the Potential option at Epic grade or above.

🔸 Growth Dungeon Stage Expansion

• The maximum stage of the Growth Dungeon has been expanded from Stage 130 to Stage 140.

🔸 Equipment Management Convenience System Added

A new system has been added that lets you sort, equip, or dismantle your equipment based on preferred options.

• Equipment Preset Filter
  

  • This filter function is available on the Equipment Preset page.

  • You can sort owned equipment by selecting equipment slots and sub options.

  • Equipment with more preferred options will be sorted to the top, and equipment with more non-preferred options will be sorted to the bottom.

  • Filter settings configured in the default preset are not saved and will reset; to save your filter settings, configure a separate filter preset.

• Equipment Dismantle Filter
  
  • You can access this via the trash can button on the main equipment page.

    • The button becomes available after defeating the Chapter 15 Boss.

  • In the dismantle filter, you can select slots and options; if no options are selected, all owned equipment will be displayed.

  • If you select "Include Sub Option," equipment containing even one of the selected options will be designated as a dismantling target.

  • If you select "Exclude Sub Option," equipment containing even one of the selected options will be excluded from dismantling targets.

  • You can dismantle the filtered equipment in bulk.

🔸 Town Exclusive Costume: Chair System Added

• Chairs have been added as a new town-exclusive Costume item.

  • Path: [Menu - Costume - Special] tab

• Chairs can only be used in community spaces where you gather with other Maplers, such as towns, Guild headquarters, and Guild Raid entrances.

• When your desired chair is equipped, a sitting animation will play in designated spaces.

• Chairs come with a modest inventory effect.

• Some special chairs have a 'Fame Buff' function.

  • In this update, these chairs can be obtained as limited-duration rewards for achieving 1st–3rd place in the World Arena individual ranking.

  • If you raise the Fame of a Mapler sitting in that chair, the Mapler who raised the Fame will receive a +10% EXP Gain buff for 30 minutes. This effect can only be applied once per day.

  • Owning that chair applies +10% EXP Gain as an inventory effect.

🔸 Arena/Colosseum Battle Balance Adjustments

As previously announced, changes to the battle balance formula in the Arena and Colosseum will be applied.

Improved Formula

Damage =

√( Attack

× 5,000 ÷ ( 6,000 + Defense × (100% − Defense Penetration%) )

× Damage Taken Increase% × (100% − Damage Taken Decrease%)

× (100% − Damage Taken Decrease% for Dungeon) [A stat used in dungeon/boss implementations. A representative use case is applying a negative value when a boss is neutralized.]

× Damage% × Damage Amplification%

× (Basic Attack Damage% or Skill Damage%) × Stat Prop. Damage%

× Mastery Damage Increase% [A stat used to implement skill mastery.]

× Damage Increase% for Dungeon [A stat used to implement damage increase upon achieving certain conditions in dungeons.]

× Critical Damage% when Critical occurs × (Min Damage Multiplier% ~ Max Damage Multiplier%)

× Status Effect Damage% against targets with status effects × Final Damage%)

× Skill Coefficient%

× Damage Decrease% by level from Arena adjustment x 2

[The formula is the same up to this point, and the changes begin from here.]

× [Content-exclusive Constant: Arena 7,206,000,000 / Colosseum 4,323,600,000]

÷ ((( Attack × Defense Penetration% × Damage% × Damage Amplification%

× ( [Basic Attack Damage + Skill Damage] ÷ 2 )%

× Stat Prop. Damage% × ( Critical Damage × Critical Rate weighting (up to 100%) )%

× ( Min Damage Multiplier + Max Damage Multiplier ) ÷ 2

× Final Damage% + 1,000,000,000)^0.23

× (Max HP * 100,000,000) ^0.12

× (( Defense + 6,000 ) * 1,000,000,000,000)^0.14

× ( ( 100% + Damage Taken Decrease% ) x 1,000,000 )^0.5)

÷ 10,000,000)

÷ 1,000,000

The following level adjustments are currently applied for Arena.

Levels 31–60: Final Damage decreases by 0.5% per level compared to the previous level

Levels 61–100: Final Damage decreases by 1.3% per level compared to the previous level

Level 100+: Final Damage decreases by 1.5% per level compared to the previous level

The following level adjustments are currently applied for Colosseum.

Levels 31–60: Final Damage decreases by 0.5% per level compared to the previous level

Levels 61–70: Final Damage decreases by 1.3% per level compared to the previous level

Levels 71–100: Final Damage decreases by 1.5% per level compared to the previous level

Level 100+: Final Damage decreases by 2.5% per level compared to the previous level

• MapleStory : Idle RPG uses a 1/1,000 scale for combat calculations. When calculating the % effects shown in the formula, this must be reflected for accurate application.

• For example, 30% Damage Taken Decrease is represented internally as 300, and this is reflected during calculations. Therefore, the portion of the formula reading 100% + Damage Taken Decrease% is calculated as 1000 + 300.

• Percentage stats (Damage, Damage Amplification, etc.) are applied in the same 1/1,000 scale. Internally, (1000 + stat value) is multiplied and then divided by 1000 to get the multiplier. For example, 50% Damage is 500, so it results in (1000 + 500) ÷ 1000 = 1.5x. In the explanation above, this is simplified as 'Damage%'.

• When calculating base damage within the formula, attack stats are calculated based on the attacker, while defensive stats are calculated based on the target.

• When calculating the damage decrease effect from PVP adjustment, both attack stats and defensive stats are calculated based on the target. Moreover, this value is based on the stats applied before the battle begins and is not affected by changes that occur during battle (such as active skills, buffs, and effects triggered at the start of battle).

As a result of this formula change, the impact of Max HP, Defense, and Damage Reduction options on reducing damage in PVP battles will be greater than before, while the effect of offensive options in reducing damage will be relatively softened.

After this change, we will continue to monitor the state of the game, and if any items requiring correction are found, we will inform Maplers in advance with detailed information.

🔸 Companion Preset Improvements

• The [Auto Summon Companion On/Off] setting in Companion Preset has been updated to save separately per Dungeon Preset.
  

  • Before: If the same Companion Preset is used, the On/Off option is shared across all Dungeon Presets using it. The option is controlled from the Companion Preset.

  • After: Even with the same Companion Preset, the On/Off option is applied individually per Dungeon Preset. The option is controlled from the Dungeon Preset.

  • With this change, the Auto Summon Companion ON/OFF button will be removed from the [Companion] screen.

  • Please note that the Auto Summon Companion On/Off setting previously configured in existing Companion Presets will be reset due to this change.

• Auto Summon Companion can no longer be turned off during chapter auto hunt.

  • Even if Auto Summon Companion is turned on, the Companion will not be summoned automatically unless Auto Battle is set to use all skills automatically.

🔸 Potion Stage Expansion

• The maximum stage of HP and MP Potions has been expanded from Stage 20 to Stage 30.

🔸 Chat Message Elapsed Time Display Added

• An elapsed time display has been added so you can check how much time has passed since receiving a chat message.

🔸 Client Optimization

• Various optimizations related to game stability have been applied.

• Issues such as stuttering, overheating, and crashes have been addressed.

🔸 Star Force Field Event Extension

• As announced in the no-downtime patch notice on 6/25 (Thu), the event period for the currently ongoing Star Force Field event dungeon will be extended.

  • Before: Until June 28, 11:59 PM (Server Time)

  • After: Until July 19, 11:59 PM (Server Time)

   

🔸 New Events

⭐ Summertime Hunt Event [Link]

📌 Event Period: After the July 2 maintenance - Until July 22, 11:59 PM (Server Time)

Defeat monsters in chapters, fill the gauge, and activate the Shining Shooting Stars skill.

Activate the skill to defeat monsters and earn Summertime Coin.

⭐ Challenge! Romeo and Juliet [Link]

📌 Event Period: After the July 2 maintenance - Until further notice (Server Time, 20 days per character to participate)

Clear the Romeo and Juliet Party Quest and earn rewards based on the number of clears.

Unlock Condition: Chapter 22 - Boss Clear

⭐ Summertime With Maple Idle [Link]

📌 Event Period: After the July 2 maintenance - Until July 15, 11:59 PM (Server Time)

Log in to the game every day during the event period and earn rewards based on your login time.

You can claim additional rewards, including the special Costume 'Sprout Chair', based on the number of times rewards are obtained.

🔎 Special Costume 'Sprout Chair' Preview

Inventory Effect

• Main Stat +10

• Meso Drop +0.5%

※ This chair changes your character's movement. It can only be used in towns.

⭐ Friendship Point x3 Event

📌 Event Period: July 3, 12:00 AM - July 16, 11:59 PM (Server Time)

You can earn 3x the Elite Monster Summoning Points reward exchanged with friends.

⭐ Daily Mission Boost

📌 Event Period: July 9, 12:00 AM - July 22, 11:59 PM (Server Time, 10 days per character to participate)

During the event period, the final reward for Daily Missions is increased by 100%.

Additional rewards can be earned based on the number of Daily Missions cleared during the event period, and participation is available for 10 days from the character's opening date.

⭐ Battle Pass Boost

📌 Event Period: July 9, 12:00 AM - July 22, 11:59 PM (Server Time)

During the event period, rewards earned in Battle Pass are doubled compared to before.

🔸 Improvements

• When choosing to exit from the Growth Dungeon result screen, a Growth Dungeon selection screen will now appear.

  • This applies from after clearing Chapter 6.

• The combat difficulty and guide quest content in Chapter 2 have been improved to be easier to complete.

• When there is mail with less than one day of remaining time, the mailbox notification will be displayed more prominently.

• When attempting to reroll a Journey Trail with the special option unlocked, a notification popup will now appear.

• While a Journey Trail is being unlocked, an icon indicating the unlock is in progress will appear on the quick menu button.

• When opening Journey Chests, the total amount of Journey Tokens obtainable based on the selected number of keys will now be displayed.

• The estimated stats displayed in the Equipment Preset will now reflect the estimated stats of the currently viewed Dungeon Preset.

• The stuttering that occurred when having an excessive number of equipment items in your inventory has been fixed.

• Help text has been added to content that requires in-game explanations, and help content has been enhanced.

• During repeated Party Quest runs, the chapter idle hunt count will no longer decrease, progress will no longer reset each time, and the Party Quest will continue from the state it was in at the time of entry.

• When time-consuming content can be immediately completed using a Time Acceleration Ticket, guidance has been added to the Growth Guide.

  • Elite Monster Summoning Level Up

  • Hero Power Stage Upgrade

  • Skill Mastery Unlock

  • Journey Trail Unlock

Bug Fixes

• Fixed an issue where an unclaimed reward mail disppears when a player is forcibly removed from a Guild before receiving Guild reward mail.

• Fixed an issue where text entered when changing a Costume mannequin name was reflected in the costume search.

• Fixed an issue where, when two or more Hot Deals were active at the same time and the first Hot Deal was purchased to obtain Blue Diamonds, the amount of Blue Diamonds obtained was not updated on the second Hot Deal purchase button.

• Fixed an issue where all participants' connections would be dropped when some participants had an unstable network connection during Party Quest matchmaking.

• Fixed an issue where, after Party Quest auto-matchmaking was canceled due to a network problem and the Shoreline Ruler mini-game was played, the previous auto-matchmaking would resume after the mini-game ended.

• Fixed an issue where another user in individual matchmaking could participate in party chat after a party was created and auto-matchmaking began.

• Fixed an issue where monsters spawned on the 2nd floor would occasionally fall immediately to the 1st floor in certain chapter challenges.

• Fixed an issue where summoned monsters from the 48th boss onwards in the Guild Conquest would decrease scores upon death.

• Fixed an issue where some effects from skills used in the previous wave would momentarily appear in the next wave during Party Quest wave transitions.

• Fixed an issue where the opposing Guild appeared to be matched with itself during a Guild Boss Battle when the opposing Guild was disbanded.

• Fixed an issue in the Guild Conquest where quickly defeating the boss while it was in an incapacitated state caused the boss's actions to appear out of sync with its actual skill effects afterward.

• Fixed an issue where the opacity option for other users' effects in a chapter was being controlled by the enemy effect option.

• Fixed an issue in the Journey Trail where, after using the "Remember Option" reroll, the locked option appeared to have changed when locking an option and opening the re-select popup on the next selection. Options cannot be locked if there are unselected options.

• Fixed an issue where the HP bar status icons at the top appeared in 2 rows when there were too many during PVP battles.

• Fixed an issue in Equipment Dungeons where rush-type skills caused movement.

• Fixed an issue where the Horntail Guild Raid preset was open even when the Guild Raid could not be entered.

• Fixed an issue where Horntail's shield amount was not decreasing based on the curse stack during the Horntail battle.

• Fixed an issue where the settlement Red Dot notification for the Sunday World Boss and Arena weekly settlement would not disappear without closing the game.

• Fixed an issue where some Guild members' scores appeared as -1 in the Guild Training Ground's past records.

• Fixed an issue where the damage font was not displayed properly for damage of 1 quadrillion or more when playing the game in English.

• Fixed an issue where nicknames could be made longer than the character limit in certain situations.

If your nickname does not meet the character limit or formatting requirements, we will provide 1 Nickname Change Coupon during the maintenance. Please update your nickname to a valid one before the next update maintenance. If the nickname is not changed by then, it will be reset to the initial nickname.