ULTRA RIFT TRIGGER

ULTRA RIFTTRIGGER

A co-op roguelite FPS. Drop in with up to four, hold back a horde that never thins on its own, and chase the rift deeper every run.

1–4 players, drop-in co-op Runs over Steam — join by code Free to download

Every run is a new push into the rift.

Seeded floors, escalating waves, and a build you assemble on the way down. Bring friends — the horde scales, the run is shared, and a dropped teammate reconnects into the same fight.

Co-op first

Four players, one run

Host a lobby, share the code, and fight together. Everyone sees the same enemies, the same kills, the same rift. Lose your connection and you rejoin the run in progress.

Horde density

Thousands, not dozens

A data-oriented swarm that keeps coming. Cut lanes through it with hitscan fire, watch your spacing, and never stop moving.

Roguelite

The run remembers the seed, not your mistakes

Discrete floors, a spawn director you can read, and permanent stakes per run. Die together, start over, go deeper.

No servers

Peer-to-peer over Steam relay

No dedicated hosts, no port forwarding. Steam's relay punches through NAT so a friend across the country joins by code.

Get Ultra Rift Trigger

Grab the launcher — it installs the game, keeps it current, and updates itself. Or take the raw build.