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Mostly a ‘survival of the fittest’ free-for-all, sometimes with cooperative gameplay. Players that consume food, and often other players, to grow bigger.
Simple mechanics that make gameplay possible for anyone.
A large online multiplayer arena with a competitive leaderboard. Reach the top of the leaderboard by doing this repeatedly until you're the biggest! Most IO games feature: io games are based on survival - growing your character by consuming food and slaying other players. There are now many grow games like Snake.io and Wormate, taking this fast-paced survival concept further. Slither.io was one of those games, with the same simple yet addictive concept but with snakes. io as a genre, not just a domain extension. The games that followed were focused on the growth mechanics that made Agar so popular, strengthening the idea of.
A few months after its release, the game was acquired by Miniclip, and a new game genre started to emerge based around the humble. The game revolves around cells that grow by eating agar and consuming other players. It was developed by Matheus Valadares in 2015 and gained significant popularity through the internet forum 4chan.