Overwatch 2 patch 3.87 landed as a focused balance pass for Junkenstein’s Laboratory, the limited-time mutation mode that gave each hero a set of round-by-round upgrades. For PS5 and Xbox Series X|S players, the build appeared as version 1.000.052. In 2026, the event itself is long finished, but the patch remains a useful snapshot of how Blizzard tunes experimental modes and competitive queues. The update also touched Open Queue matchmaking, hero balance, and a long list of bug fixes that affected everything from HDR displays to golden weapon purchases.

Junkenstein’s Laboratory: The Final Week Tuning Pass

Junkenstein’s Laboratory was designed around mutations, temporary hero upgrades that players picked before each round. Blizzard said it had been excited to see players experimenting with the different builds, and the 3.87 patch adjusted several of those mutations during the event’s final week. The mode remained playable in the Arcade through November 4, though by 2026 that window has closed.

The changes were not uniform buffs. Some mutations received stronger payoffs, while others had their numbers trimmed. That mix suggested Blizzard was trying to keep the mode’s wildest combinations in check without flattening the fun.

Hero	Mutation	Adjustment
Ashe	Burn Down	Ultimate charge from damaging burning targets rose from 25% to 30%
Ashe	Firestarter	Viper shots on burning targets reduced Coach Gun and Dynamite cooldowns by 7%, up from 5%
D.Va	Irreparable Damage	Fixed Booster impact dealing extra damage on top of the anti-healing debuff
D.Va	Heavy Slugs	Weapon damage increase dropped from 100% to 75%
Genji	Press Advantage	Shuriken critical hits now grant 3% attack speed per stack, up to 10 stacks, for 10 seconds
Genji	Meditation	Deflect healing rose from 10% to 15% of max health per second
Genji	Hot Steal	Next Swift Strike damage bonus increased from 50% to 75% based on damage prevented
Genji	Blade Dance	Cooldown penalty moved from 5 seconds to 3 seconds
Kiriko	Clutch Save	Extra healing to allies below 50% health rose from 25% to 30%
Kiriko	Drawn Together	Overhealth after teleporting rose from 50 to 75 for 5 seconds
Kiriko	Suzu Blitz	Attack speed buff after Protection Suzu extended from 5 seconds to 10 seconds
Kiriko	Vindictive Vision	Reveal duration on enemies farther than 12 meters rose from 3 seconds to 5 seconds
Kiriko	Self Revitalization	Protection Suzu now heals Kiriko for 100 extra health and grants 25% movement speed for 5 seconds
Mercy	Battle Angel	Healing from damage dealt outside Valkyrie rose from 100% to 150%; Valkyrie healing remained at 200%
Mercy	Power for a Price	Damage boost healing rose from 7.5% to 10% of damage dealt
Mercy	Emergency Boost	Cooldown dropped from 10 seconds to 7 seconds
Mercy	Fall from Grace	Angelic Descent movement speed rose from 15% to 20%
Moira	Frightening Fascination	Secondary fire lock angle narrowed from 50% to 40%
Moira	Siphon Strike	Quick Melee Biotic energy restore rose from 10% to 15%
Moira	Equilibrium	Movement speed reduction eased from 30% to 20%
Orisa	Aerial Spin	Javelin Spin now grants free flight and 15% increased movement speed
Orisa	Final Tank Fantasy	Overhealth while slowed jumped from 35% to 200%, with a 20% slow
Orisa	Heat Flush	Javelin Spin now depletes 90% of max Overheat, up from 50%
Orisa	Energy Recharge	Energy Javelin cooldown reduction rose from 15% to 20%
Orisa	Violence Begotten	Critical hits now grant 8% attack speed for 5 seconds, up from 6%
Pharah	Air Superiority	Damage bonus after Jump Jets and Jet Dash lasted 3 seconds instead of 5
Reaper	Shadow Cast	Shadow Step cast time reduction changed from 35% to 30%
Zenyatta	Harmony Movement Bonus	Harmony Orb movement speed buff dropped from 25% to 20%
Zenyatta	Master and Apprentice	Zenyatta’s self Harmony Orb effectiveness dropped from 50% to 40%; ally effectiveness stayed at 20%

A few notes were easy to miss. The patch doubled Barrier Projector shield health from 300 to 600 for the relevant Winston mutation, with the notes listing it as Winston Upgrade in one section and Winston Bubble in another. Orisa’s Chilling Blow entry showed 50% before and after, so it read more like a documentation hold than a live change. Those small inconsistencies made the patch notes feel very much like a live-service document assembled under deadline.

Competitive Queue Changes and Hero Balance

Beyond the event mode, patch 3.87 made a notable Open Queue Competitive change. Starting in Season 13, wide groups, narrow groups, and solo players were placed into the same matchmaking pool. Blizzard’s stated goal was to reduce extreme wait times for groups of any size. The Wide Group modifier and its notification UI were slated for removal in a future update. By 2026, Season 13 is ancient history, but the decision still illustrates the tension between fast queues and fair matches.

Tank players saw several adjustments:

• Orisa’s Energy Javelin damage dropped from 80 to 70.

• Orisa’s Fortify no longer reduced Fusion Driver heat generation.

• Wrecking Ball’s Quad Cannons ammo rose from 80 to 100.

• Wrecking Ball’s Grappling Claw duration increased from 6 seconds to 8 seconds.

• Ramattra’s Pummel appeared in the notes without a listed change.

On the damage side, Sombra’s Hack now exits stealth when hacking an enemy target, a meaningful shift for her engagement loop. EMP’s ultimate cost was reduced by 10%. Among supports, Juno’s Orbital Ray healing fell from 100 to 85 health per second.

Bug Fixes: Quality-of-Life Matters

The general fixes were the kind of housekeeping that dedicated players notice immediately. Blizzard fixed Quick Play auto-requeue, allowed some Overwatch League player icons to be purchased individually, resolved an HDR setting that could turn the screen black, fixed the first purchase attempt of a golden weapon failing, restored missing Grey Overwatch League skins in the hero gallery, and addressed a hero gallery crash from a previous update.

Map and hero fixes rounded out the patch. Dorado received a fix for the payload being contested from unintended places. Mercy had a jump and crouch cancel bug corrected, and players using Pink Mercy or Rose Gold Mercy could hear pistol sounds in first person again. Reaper’s custom Shadow Step sounds were fixed in first person, and Reinhardt’s All Might skin finally played Ultimate sounds correctly.

In 2026, patch 3.87 reads like a time capsule. It shows Blizzard balancing an experimental mode with quick numeric nudges, simplifying Open Queue matchmaking for group wait times, and cleaning up the small but irritating bugs that can define a player’s session. The event is over, but the patch’s lessons about tuning chaos without removing it remain relevant.