Kazap.io is probably the fairest shooter game ever made. Although it is not very popular and has a small player count, the maps are small and are fun to play in! You play as a spaceship in a closed space area. The borders of the map are highlighted and destroy ships that make contact with them. You fly your spaceship with the arrow keys, shoot with the X key, and boost with the Shift key or Spacebar. Every time a spaceship is destroyed, cloud-like particles appear. The fact that spaceships can't heal themselves, makes it difficult for the top player to hold his/her rank as players can trace them (they are visible on the minimap).