Zomp
The original... the fuzzy blue guy in his first puzzle adventure. This game was conceived and created in 1999. It was completed in just over 2 weeks, and released as freeware. It has 25 levels, and is quite a challenge. The graphics aren't the prettiest (understatement), but the gameplay is fun. A favorite type of game of mine, Zomp holds a dear place in my heart.
Released on April 29, 1999.
http://www.skelman.com/games_zomp.shtml
There is also a shareware version of the sequel.
http://www.skelman.com/games_zomp2.shtml