Super Mario War - Today's Time Waster
The game features a multitude of modes, as well as a game level designer, and over 400 user-submitted levels, providing almost limitless replay value.
If you're at all familiar with the Mario line of side-scrolling games, and really... who isn't, you'll understand how to play this game. It's all about stomping on each other, the way Mario squished his enemies in all of those classic games. Happy stomping!