Gunball Arena is a tournament game in which you will have to fight against other gunballs and try to survive.At first, you have to select the first round of the tournament and start playing. You only have one knife at your disposal, so you have to move quickly and try to catch your opponents off guard. Your health bar is displayed on the top left side of the screen and you should keep an eye on it if you want to survive. You can move around the screen with the WASD or the directional keys and you have to aim your blade with your mouse. You can pull out the blade by clicking the left mouse button, but your enemies will die even if your blade is in its normal position, as long as it touches them. You just have to move around and ram into your opponents without hitting their weapon. Most of them will die from one hit and they will leave some coins behind them, so make sure you collect them because you'll need them later. Keep in mind that in GunBall Arena, some gunballs will have canons and other strong weapons. You can upgrade your abilities between levels by clicking on the shop button. This is where you can increase your speed, armor and a few other special skills or you can buy a better weapon. After you're done with the shopping, you can choose your next round and see how far you can go in the Gunball Arena tournament.