Run the flag. The controls are in game, there is a tutorial. Q to lean left, E to lean right. WASD to move. R to reload. Click to shoot. Move your mouse to aim. Win against the other team! There is cloud multiplayer, you must be a verified scratcher to play multiplayer.
Credit to the original Rainbow Six Siege. Most of the sprites are from the original game. Code is from me - This took SO LONG to make