Cross-Circle-Triangle: Battleground __ LOCK

It is like a simple Tic-Tac-Toe game, but with a third player and a bonus system. Yeah, right, I said bonus system, but more about that later. So...It is necessary to build a "line" of 3 signs and not to let your other opponents do the same. For each "line" of signs you get points. The game continues until one of the signs gets 100 points.