HappyLand is a side scrolling platform jumping game that requires you to gather and lead happyland animals to the happyzones. You play a dog that receives instructions from various old men throughout the game.
Once you've lead enough animals to the happyzone, the level door opens and you can proceed to the next level. Of course, you can also stay and find all the goodies hidden in each level.
This game was originally written for an amateur game programming contest at Gamedev.net. Happyland Adventures won the contest, and it also got an award for 'Best use of SpriteLib'.