"Tank Trouble SWF" doesn't list any rules before or during game play, but in the game, the player controls a tank in a maze and attempts to shoot enemy tanks. When a shot hits a tank, it explodes and that player loses.
"Tank Trouble SWF" is available on TankTroubleSWF3.com, as of 2015. The game has one-player, two-player and three-player options. The one-player option matches the player against the computer, named Laika. Two- and three-player games have each player controlling a tank on the same computer.
Player One's tank is red, Player Two's tank is green and Player Three's tank is blue. In one-player games, Laika's tank is black.
Controls allow the player to rotate the tank left and right, accelerate, reverse and fire the tank's cannon. The tank fires a small black ball that bounces off walls, and it can fire multiple shots in a row. The game uses keyboard controls that it displays before each match. For three-player games, Player Three controls his tank with the mouse.
Once all tanks except one explode, the surviving player scores one point. However, that player must stay alive for a brief period of time to receive the point. If his tank explodes, no one gets a point for that match.
Mazes and starting points for the tanks vary. The game offers several weapon power-up options. Power-up icons appear on the map, and the player uses them by driving over them.