Ben 10: Xtreme Adventure 2
Ben has the power to fight aliens and mutants since he have the Omnitrix that he could use. However, the device got its downtime and during those times, Ben can't fight aliens as he need to wait till the device is fully recharge. Sad to say, that Ben needs to hide to fight another day. Of course, Ben can't always do that; there would be times that he needs to fight without the Omnitrix. It is because of that Ben learned martial arts, so that he could defend himself as the device is getting ready to be use once more. Recharging would take a long time, so Ben would need to defend on his martial arts skills to fight some aliens. No, you won't see Ben using martial arts in this game; rather he would jump on the enemy to get rid of them. The idea here is to get to the finish line as fast as you can. Grab some coins along the way. There would be some mutants trying to stop you, but you can jump on them to get rid of them. The game becomes more challenging as you make some progress, but that would make the game even better if you get what I mean.