In Agar.io, the membership system is available free of charge to all players. If you become a member, you can start the game a bit bigger so that you can focus on more games by saving time. In addition to the membership system there are options to accumulate, win and buy coins in the game. With Coins, you can get features from the market that will strengthen your character or give you extra options. You do not need to pay for coins because the game offers players the chance to win coins with certain tasks. Different types of skins are available in the game and players are free to choose the skin they want. While playing the game, you can see the player with the top 10 points in the room's leader list.