Agar.io
4.5•🎯 500M plays•io games · casual
✨About Agar.io
The game that started the .io craze. Eat smaller cells, dodge bigger ones, split, team up, conquer. Still impossibly addictive after all these years.
🎮 About Agar.io
Agar.io is the original .io game — the one that started it all. You're a tiny cell floating in a petri dish. Eat food pellets to grow. Eat smaller cells to grow faster. Avoid bigger cells or you'll be eaten. Simple premise, endlessly competitive gameplay.
The goal is to become the biggest cell on the leaderboard. You split your cell to chase prey, eject mass to move faster, and use viruses as weapons or shields. The deeper mechanics — splitting, ejecting, popping viruses, hiding in green pellets — take time to master but are endlessly rewarding.
It's a browser-based multiplayer game that launched in 2015 and is still hugely popular. Matches last 5–15 minutes, and every round is a fresh mix of players.
📖 How to Play Agar.io
- Spawn as a tiny cell. You start small. Move around eating glowing food pellets to grow steadily.
- Eat smaller cells. If you're bigger than another player, you can eat them by moving over them. Smaller players = food.
- Avoid bigger cells. If they're bigger than you, run. They'll eat you instantly. Don't get greedy — survival matters.
- Use Split to attack or escape. Press Space to split into two cells. Use it to catch prey or quickly escape a tight spot.
- Master viruses and ejection. Green spiky circles are viruses — they'll pop any cell that touches them when too big. Use W to eject mass strategically.
⌨️ Controls
Whether you’re on desktop or tapping away on your phone, Agar.io keeps things simple:
| Action | Desktop | Mobile |
|---|---|---|
| Move | Mouse (cell follows cursor) | Touch and drag |
| Split | Space | Split button |
| Eject mass | W | Eject button |
| Show/hide leaderboard | Tab | Leaderboard button |
✨ Features
- Instant multiplayer — You're in a match within seconds of clicking play. Servers fill automatically.
- Simple but deep mechanics — Easy to learn, hard to master. Splitting, ejecting, and virus play take time to learn.
- 5–15 minute matches — Quick enough for a coffee break, long enough to climb the leaderboard.
- Global leaderboards — Compete for the top spot on the server. Bragging rights are real.
- Multiple game modes — FFA (free-for-all), Teams, Experimental, Battle Royale. Variety keeps things fresh.
💡 Tips & Tricks
- Stay near the centre. More food pellets spawn in the centre, and you'll grow faster. But bigger players also roam there — stay cautious.
- Use viruses as shields. Hide behind viruses when you're big — predators can't eat you without popping the virus first.
- Split to catch prey. If a smaller cell is just slightly faster than you, split to halve your mass and increase your speed.
- Don't split near big cells. Splitting makes you vulnerable. If a big cell is nearby, escape as one piece, not split.
- Hide in green pellets. You become invisible while standing still in a green pellet patch. Great for ambushes and escapes.
👥 Who Should Play Agar.io
- Casual competitive gamers — Easy to learn, hard to master, instantly accessible. The perfect "just one more round" game.
- Original .io game fans — Agar.io started the entire .io genre. If you love the format, this is the original.
- Anyone with 5 spare minutes — Matches are short, action is constant, and the leaderboard gives you a clear goal.
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❓ Agar.io FAQ
Is Agar.io free?
Yes — completely free in your browser. No downloads, no installs, no premium features.
How many players per game?
Up to 25+ players per server, depending on the mode. Most servers fill within seconds.
Can I play with friends?
Yes — switch to Teams mode and join the same team. Private party options are also available.
Are there different game modes?
Yes — Free-for-All, Teams, Experimental (with special rules), and Battle Royale variants.
Can I play on mobile?
Yes — touch controls are fully supported. Pinch to zoom, drag to move, tap to split.
Do I need an account?
No account needed. Stats and progress save per-device.
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