Battle Carnival is a team multiplayer FPS using a system of quick matches. Each round lasts no more than 10 minutes. At the end of the match players get in-game currency and experience points used for upgrading their account level. Before entering the battle player has to choose a character and a primary weapon. Secondary weapons, such as knives and grenades, are tied to characters and cannot be changed.
The game has 12 playable characters, each with their own story, active and passive skills and unique secondary weapons. Each character also has a different amount of health points and additional perks like quick running or ability to move quietly.