Party.io is a multiplayer io game that's tons of fun to play. The rules are simple: be the last player left in the arena if you want to win. The controls are easy to learn but a bit challenging to master, and that's part of the fun. Use the left click to move and right-click to pick up and then drop your opponent off the map. There are 11 characters that you can choose from at the beginning of the game and you can also choose your own name. If you're up for a fun game then Party.io is a very good choice.