Sparkz (a.k.a. Dr. Sparkz Lab) never made it past the prototype stage. It's a puzzle game that can easily be described as Tetris meets Pipe Dream meets the Bride of Frankenstein.
The game plays on a split screen. The left is where you play, the right has your progress in creating your monster.
On the playfield, there are pipes that run up both sides. You have to connect one side to the other (Pipe Dreams) with the pieces that fall from the top (Tetris).
Of course, all the typical genre things are here, most importantly you can rotate the pipe piece as it comes down to make it fit how you want. There are special pieces that float down that block your progress or help you bust up pipes that didn't fit correctly. And the speed of the falling pieces increases as the round goes on. The pace can get very fast very quickly.
Each round requires you to make a few "sparkz" - which means connecting the pipes across the playfield. You have to make more sparkz in succesive rounds. When you finish a round successfully, you get another body part on your monster.
It's good, well-flowing fun, and a must play if you enjoy Tetris or the like.