Welcome to the 1940s. America is under siege by giant robots, and a gang of four bikers is poised to fight back. With guns? Of course not! If you have a motorcycle that can punch through walls, you don't need a gun. Next, simply replace the front wheel with a flaming sawblade and you can cut down your earthly attackers with speed and, more importantly, flair.

Steel Rats is a speedy combat side-scroller that combines racing, fighting, and high-pressure platform puzzles into strange but quick action.

This game is a high-intensity platform puzzler with a strange but fast-paced action.

The game is currently free on Steam and will remain free through Monday, April 4. It would be a fun download for those looking for something immediately accessible and with lots of explosions.

If chrome rims and leather jackets aren't your thing, you'll find something on the best free PC games list.