I test a lot of games and they all come and go, but Hyper Universe is still remains installed and I often login for a game or two. I've even supported the developers by purchasing a handful of skins. The game has a ton of playable characters so you're likely to find one that suits your style. There was this one interesting ugly looking character that I wanted to play, but didn't really like his monster look. I noticed he had a cute yellow bear skin, dunked some Nexon cash and played him all day, lol. I gave everyone hugs and body slammed em in my latest gameplay below! Now that I think about it, all of my character skins below is sporting out the yellow color.
Game Site: http://hu.nexon.com/