SLIME STACK

A lighter, card-only sibling to Slime Colony. Merge Slimes, grow your swarm, and complete Rites — all in your hand, no board.

2–4 players ~30 min Prototype

Slime Stack is in early prototype. Rules are still shifting draft-to-draft.

Rules draft

Current playtest rules and cheat sheet:

Rules draft → Cheat sheet →

How it plays

Each turn: Merge same-type Slimes to grow, then take one action — Complete Rite, Grow (add growth tokens), Draw from the Slime deck, Mutate (merge across types), Split, or Royal Combine. A Royal grants a second action per turn.

The game ends when the Ripple Effect deck runs out. Highest total growth on your Slimes wins.