Play Agar.io Online Free

About Agar.io

Agar.io is where the entire .io genre came from. Matheus Valadares released it in 2015: you're a circular cell on a petri dish, you eat pellets and smaller players to grow, and anything meaningfully bigger than you can eat you. That's it, and it was one of the biggest games in the world within a month.

The depth is in splitting. Pressing space divides your cell in two and launches half forward, which is how you catch someone faster than you — at the cost of being smaller and more vulnerable until the pieces merge back. Every fight is a judgement about whether the split is worth it.

How to play Agar.io

Move

Mouse — your cell follows the cursor

Split

Space

Eject mass

W

1. Eat pellets to grow slowly, and smaller players to grow fast.
2. You can eat any cell noticeably smaller than yours.
3. Split (space) to launch half your mass forward and catch faster prey.
4. Green spiky viruses split a large cell that touches them — small cells can hide behind them.
5. The bigger you get, the slower you move.

Agar.io tips

• Don't split unless the kill is certain; a split cell is prey for anyone bigger.
• Hide behind viruses when a large cell is chasing you — they can't follow without exploding.
• Corners are death. Stay where you have escape routes in several directions.
• Feed a teammate mass with W to build one large cell in team modes.

Agar.io — questions