Marvel Rivals Season 10.5 Starts October 9: Infinity War 2v2, 50-Player Endgame Mode and Halloween

Season 10.5 skips a new hero but adds an Infinity War 2v2 mode, a 50-player Endgame PvE fight against Thanos, a new Annihilation map and two Halloween events.

Marvel Rivals' midseason update arrives on Thursday, October 9, 2026, and NetEase has spent this week explaining what's in it. Season 10.5 doesn't add a new hero. Instead, it leans on the year-long Path to Doomsday storyline with two Avengers-themed limited-time modes, plus a new map for the big 18v18 Annihilation mode and a Halloween schedule running through the end of October.

Here's everything confirmed so far, with dates.

Season 10.5 at a glance

No new hero this time

Season 10 launched on September 11 with Gorr the God Butcher, the latest addition to the roster, along with a Scarlet Witch rework. Usually a midseason update brings another hero, but outlets including Destructoid, GosuGamers and Beebom all report that 10.5 skips one. The focus this time is on limited-time modes and events.

That's a notable change for a game that has added characters at a steady pace. Until Season 11, the new content is all about modes rather than heroes.

Path to Doomsday: Avengers: Infinity War (October 9)

The first new mode goes live with the update. Avengers: Infinity War is a fast 2v2 PvP mode set in Wakanda:

• 12 players split into six duos, choosing from a pool of 13 heroes tied to the 2018 film.
• Teams face each other in a series of short deathmatch rounds. Losing a round costs your team health, and a team that runs out is eliminated.
• Upgrade cards are drafted between rounds from a random pool, which boost abilities and stats. GosuGamers compares it to the earlier Age of Ultron mode.
• Each team starts with a randomly assigned Infinity Stone that grants power-ups. Beat another team and you can claim theirs, so the late rounds can get chaotic.

Destructoid notes the mode was delayed from its original plan, so 10.5 is where it finally debuts.

Path to Doomsday: Avengers: Endgame (October 22)

The bigger experiment comes two weeks later. Avengers: Endgame is a PvE mode in which 50 players team up against Thanos and his army in the ruins of the Avengers Compound, recreating the final battle of the 2019 film.

NetEase hasn't shared the full rules yet, such as how the 50 players are organized or what rewards are on offer, so expect more details closer to launch. A 50-player co-op mode is a big change for a game built around 6v6, and it could be one of the most talked-about events of the year if it works.

Beebom also reports Avengers-themed activities in the Times Square hub with rewards including Units, emotes and nameplates.

A new map for Annihilation

Annihilation, the large 18v18 mode, gets a new map at launch: Alchemax Headquarters. Destructoid points out that it gives players another place to farm Lord icons, which makes it worth a look for anyone chasing hero proficiency.

Halloween: costumes and two events

Halloween is the other big theme. New spooky costumes have been shown for nine heroes:

• Devil Dinosaur
• Blade
• Elsa Bloodstone
• Deadpool
• Rocket Raccoon
• Mister Fantastic
• Invisible Woman
• Scarlet Witch
• Black Cat

Two events are on the calendar:

• All Hallows' Glow starts with the October 15 update and offers costumes and cosmetics as rewards.
• Halloween Night of Illusions starts on October 29 and is described as an interactive, suspense-driven puzzle experience.

NetEase hasn't said yet which of the costumes can be earned through events and which will be sold in the store.

Balance changes

The official Version 20261009 balance post went up on October 6 with adjustments for Iron Man, Phoenix, Gorr and Jubilee. The full numbers will be in the patch notes when the update goes live, and we'll cover those separately.

Esports: Ignite heads to Stockholm

Season 10.5 also runs alongside the business end of the competitive year. The Marvel Rivals Ignite Stage 2 playoffs begin this week, and the Ignite 2026 Grand Finals will be held at DreamHack Stockholm later this year.

Why it matters

Season 10.5 is a test of whether Marvel Rivals can keep players interested without a new character. The Infinity War mode sounds like a quick, replayable side mode. The 50-player Endgame fight is the bigger gamble, and if it delivers, it could set the tone for the rest of the Path to Doomsday storyline.

The update arrives on October 9. If you've been away since Gorr's launch, it's a good time to come back, whether for the new modes, the new map or the Halloween costumes.

This article was written by AI (Claude) and checked against the sources above. Games are updated regularly, so details may change.