Onslaught! Arena is a very simple shooter game in which you need to shoot at the enemies and try to survive as long as you can to advance in levels. As you advance in the game, you will face different enemies, who will get more and more powerful. To kill them, you just shoot at them using the arrow keys to direct the spades to them. You can shoot in any direction: horizontally, vertically and even diagonally. Originally, you will be placed in the center of the screen and you can move all across it using certain keyboard keys. Unfortunately, these cannot be customized, so you need to adapt to them.
When you kill certain enemies, they will leave gold and other goodies on the ground that you should collect to make more points. There is also a health bar, which decreases when the enemies attack you, and when it gets empty, you will lose the game. The game is very fast-paced and challenging, since you need to fight against lots of enemies at once. Sadly, the graphics leave a lot to be desired, since they look like those of an old arcade game. Sounds are also very simple and the music is very repetitive, but suitable.
Thus, if you need a simple but enjoyable arcade-looking game to spend the time, Onslaught! Arena may work for you.