Cell Division
A strategy board game inspired by biology. Outsmart AI opponents, compete on global leaderboards, and earn achievements.






How to Play
Place cells, connect them into clusters, outscore your opponent.
Place Cells
Players take turns placing cells on empty spaces. Cells connect to same-color neighbors in all 8 directions — horizontal, vertical, and both diagonals. Each cell scores based on its connection axes: 1 point if isolated, +2 per active axis, up to 8 points.
Each cell's score reflects its connection axes; the number on empty spaces shows what the current player would gain by placing there. The +12 in the bottom-left means: the new cell would score 6, plus 3 neighbors each gain an axis (+2 each) = 6 + 2 + 2 + 2.
Build Connections
Green places a cell in the bottom-left corner, forming a 2×2 block. Every cell in the block now connects on 3 axes, jumping from 4 to 6 points each. Green's total leaps from 12 to 24.
Cyan's +9 in the middle-right means: the new cell would score 4, plus 3 neighbors gain axes = 4 + 2 + 2 + 1.
Win the Game
The game ends when all spaces are filled. The player with the highest total score wins!
Scoring
- 1 pointisolated cell (no same-color neighbors)
- +2 per axiseach active connection axis
- 4 axesvertical, horizontal, diagonal
\, diagonal/ - 8 points maxall 4 axes connected
An axis is "active" if the cell has at least one same-color neighbor along it. Having neighbors on both sides of an axis doesn't give extra points.
AI Difficulty
- Easy — Prefers open areas of the board. A good starting point for new players.
- Medium — Targets high-scoring moves and builds connections when possible.
- Hard — Expert-level AI that considers score, centrality, and blocking.
- Elite — Tournament-strength AI trained through self-play.
Mirror Rule
On a symmetric board, the second player could guarantee a draw by reflecting the first player's moves. Cell Division detects five types of mirror strategies (vertical, horizontal, both diagonals, and 180° rotation). If every second-player move mirrors the first player's, they forfeit immediately.
Local & Online Play
Challenge the AI at multiple difficulty levels or pass-and-play with a friend. Online multiplayer coming soon.
Global Leaderboard
Climb the rankings and see how you stack up against players from around the world.
Achievements & Badges
Unlock badges by completing challenges and mastering different aspects of the game.
Multiple Board Sizes
Play on different board sizes for quick matches or deep strategic battles.