Chess Without Turns is a variation of the popular board game that does away with turns and conventional chess rules, leaving only an action-packed arcade simulation that usually favors the quickest player in a random match-up. You move your chess piece at the same time as your opponent, and every pawn that reaches the other end of the board will receive an automatic promotion. A winner is declared when their adversary's army is completely eliminated from the board.

There's no single-player option with a computer AI as your opponent, and it can be difficult getting another challenger to play online using the simplistic matchmaking system, but that shouldn't be too much of a problem anymore after having the game mentioned here.

Chess Without Turns can be played over at Kongregate.