Have a ball with Rollz, a game all about rolling a ball toward the finish line, platforming your way through an obstacle course and building up your score by some smooth moves.
Steer the ball with WASD or the arrow buttons. Jump with spacebar, and if you've picked up a weapon, fire it with CTRL.
By leveling up your ball, you can unlock additional skins, and at the end of each map, players get to vote for the next one.
Anytime there's a ramp that leads up, jump right before you go over the edge to get some sick air (and points) as well as potentially some hidden coins.