Uphill Rush

While this inventive action game will entice lovers of water slides and physics, a distinct lack of challenge means they'll only want to play for a couple days. In Uphill Rush (which is known as Uphill Rush Racing on Android), you ride a rubber tube through some creative -- and, in some ways, physically impossible -- water slides. Using simple controls that speed you up, slow you down, and lean you backwards or forwards, you have to go over jumps, make your way through loop-de-loops, and survive when you go crashing through the roof of a bar or into some guy on vacation. These slides also have multiple pathways, including some secret areas that may contain really big diamonds. Wannabe water park designers can even utilize the game's built-in level editor to create their own water slides. The problem is that while the courses get progressive more complex, they don't get more challenging. In fact, you can make your way through most by just holding down the accelerate button and occasionally leaning a bit to make sure you don't land on your face. And even then, this only becomes a problem when you're landing on something solid; belly flopping onto the pool doesn't hurt you as much here as it does it real life. Which is why, though fun at first, Uphill Rush doesn't have enough challenge to keep you coming back.