Halo 3 + Minecraft
Bring Halo weapons, Covenant, Marines and a Ghost into Minecraft, including a ready-to-play Battle Arena.
Experimental Early Alpha
Combine gamesyou already own.
Fusion Engine Pro brings compatible games together into completely new playable experiences.
Windows 10/11Early AlphaFree
Crossover concept artwork · Not gameplay
Featured Fusions
Unexpected worlds. Real possibilities.
Left 4 Dead + Minecraft
Survive Left 4 Dead’s infected and Tank inside Minecraft, including the Infected Outskirts showcase world.
Portal + Minecraft
Build, survive and use Minecraft systems inside Portal’s test chambers.
Five Nights at Balatro’s
Turn a Balatro run into a Five Nights at Freddy’s night shift where cards control cameras, doors, lights and power.
Illustrative crossover artwork. All current Fusions are experimental and require compatible games you own.
How Fusion Works
From familiar games to a new experience.
Own the games
Use the compatible games you already own.
Fusion checks them
Fusion automatically looks for compatible installed versions.
Set up
Fusion guides you through the setup for that crossover.
Play
Launch the new combined experience.
Featured crossover
Five Nights
at Balatro’s
Cards. Cameras. Doors. Power.
Survive until 6 AM.
Why Fusion?
Built around your games. Open to new possibilities.
Local game detection
Fusion checks compatible games installed on your machine.
Guided setup
Fusion handles the complicated setup behind a simple user flow.
Restore Original
Fusion-managed changes can be removed while preserving unrelated files wherever designed.
Experimental compatibility
Compatibility improves as more versions and hardware are tested.
Ready to try Fusion?
Same games. More possibilities.
Download Early AlphaWindows 10/11Early AlphaFree
Experimental Early Alpha
A little more clarity
Before you
press play.
New worlds come with a few questions. Here’s what to know about the Early Alpha.
Report a bugWhat is Fusion Engine Pro?
Fusion Engine Pro is an experimental Windows platform for creating and playing compatible crossover experiences between games.
Does Fusion include the games?
No. You provide the required compatible games yourself. Fusion does not include the original games.
Is Fusion free?
During the Early Alpha, Fusion Engine Pro is free. You still need to own the required compatible games.
Which games work?
Only specific Fusion combinations and versions. Visit the Fusion catalogue for current information and confirm support with the launcher’s compatibility check before setup. Exact tested version lists are awaiting confirmation.
Can I restore my original game?
Fusion includes Repair and Restore Original for supported recipes. What can be repaired or restored depends on the Fusion and its setup. Fusion-managed changes can be removed while preserving unrelated files wherever designed. Read more about safety and restoration.
Is this official?
No. Fusion Engine Pro is an independent fan-made project. It is not affiliated with or endorsed by the publishers or developers of the games it interacts with.
Is Fusion finished?
No. Fusion is currently an Experimental Early Alpha. Features and compatibility are still being tested.
Does it work on every PC?
No. Compatibility testing is ongoing. Supported game versions and hardware vary by Fusion; a successful setup on one PC does not guarantee it on another.