Super Tux is a free game which is popular in Linux games. If you like Super Mario Bros, I think you will like this game. The way you play this game is almost the same as Super Mario Bros. You complete level by level to save your girlfriend, Penny from your arch enemy, "Nolok". This game has a background of snow land. If Mario eats mushroom, then Tux eats snowball to grow bigger. You'll have lots of fun playing with this game. Click
here to download.