Kentris (another ripoff of Tetris)

VGA Chronicles Guy takes a crack at the legendary Kentris, a tetris clone for MS DOS, released in 1991 as freeware by Ken Silverman. The man is clearly a legend of disorienting graphics and impressive MS DOS music scores. Watch VGA struggle to play this confusing game! Enjoy!

Description quiz:
1) Why do trees grow upward?
2) Is gravity even real?
3) If you have 5 apples and your friend has 8, and you're on a train headed towards Detroit, how many mangos does a chimpanzee have in New York on a Sunday afternoon at the end of St. Patrick's day? Explain, and show your work.