FAQ

Are AI merge games real or fake?

Many are real. The MW2, Skate 3 and Minecraft mashup, SkyCraft and Mario in Elden Ring all have public code and downloads on GitHub. Some viral clips, including the original Minecraft in Elden Ring video, have never been released. Every entry on this site is labelled Playable, Build it yourself or Video only.

Do I need to own both games?

Almost always, yes. Legitimate mashup mods never include game files. They read the files from your own installed copies, the same way Garry’s Mod needed other Source games back in 2004. Each mashup page lists exactly which games, versions and platforms you need.

Is it safe to download AI game mashups?

Only from the creator’s own repository. Fake look-alike repositories appeared within days of the trend. We link the official page for every project and never re-upload anything. Back up your saves before installing, and never run an unsigned .exe from an account created the same week.

Can I get banned for playing these mods?

Not if you stay offline. Most mashups only run with anti-cheat switched off, and the creators are explicit that they must never be taken online. Games such as Elden Ring and GTA V can ban accounts that join online play with modified files.

Do AI merge games work on Mac?

Most are Windows only, because the host games are Windows PC games. The Minecraft Crossover Bridge is the exception: it runs Minecraft inside Elden Ring or Monster Hunter World on Apple Silicon Macs through CrossOver. Use the finder and pick Mac.

Can I merge two games myself with AI?

Yes, if you are patient. Tools like Claude Code with the open-source universal-modder toolkit can identify a game’s engine, decompile it and build a mod. You still need to own the games and to judge what feels right. The AI cannot. Read the step-by-step guide.

Are AI game mashups legal?

It is a grey area. Reverse engineering for compatibility is allowed in some places, but distributing a publisher’s files or characters is not, and publishers can demand takedowns. Fans who rebuilt GTA 3 and Vice City were hit with a DMCA takedown in 2021. That is why every project here asks you to bring your own games.

I made a mashup. Can you list it?

Yes. Send us the official repository or video link. We read the README, check what you need to own, and add it with the right status label. We never list projects that bundle game files.Email us

Playable · Live bridge

Killcraft

Minecraft's movement, blocks and weapons inside ULTRAKILL's levels, with a trip to the real Nether.

Official download

★ 1 · updated Oct 6, 2026 · v1.0.1

Links to the creator's own GitHub page, checked Oct 7, 2026. We never host or re-upload files, and no game files are included. Re-uploads and look-alike repos can carry malware.

Killcraft drops a Minecraft player into ULTRAKILL’s levels. You walk its geometry with Minecraft’s physics, fight its enemies with swords, bows, tridents and TNT, and place blocks that stop enemy shots and light up the level.

Highlights

  • Minecraft combat goes through ULTRAKILL’s own damage system, so crits and sweeps really hurt its enemies.
  • Spawn Minecraft mobs and they fight on your side.
  • Build a Nether portal anywhere and step into Minecraft’s real Nether, where ULTRAKILL’s rockets and railcannon blow holes in the terrain.
  • A Potion of ULTRAKILL gives you V1’s dash, slide and wall jumps for two minutes.
  • F9 switches back to plain ULTRAKILL at any time.

How it works

It is built on SkyCraft: a real Minecraft runs hidden in the background with SkyCraft’s mod plus Killcraft’s own, and ULTRAKILL draws everything. Dying in one game is dying in the other. A live bridge.

What you need

  • ULTRAKILL on Steam.
  • BepInEx 5 unzipped into the ULTRAKILL folder (start the game once so it sets itself up).
  • A Microsoft account that owns Minecraft: Java Edition. You don’t need SkyCraft or Skyrim; the download includes the portable Minecraft it needs.

Install in short

Unzip the release into ULTRAKILL\BepInEx\plugins\ and start ULTRAKILL. The first time, a small launcher asks you to sign in to your Microsoft account while Minecraft and Java download. Start any level and Minecraft takes over V1 after a moment.

Related: Ultracraft runs it the other way round, with ULTRAKILL inside Minecraft.

Same games, different merge

More cartridges