And the award for biggest piece of shit on this entire website goes to-

Good but needs work, especially controls.

This game is practically unplayable.
Let me just write down all the things I had no clue how to do at first:
1. Control my character (The arrow keys do it. However, in an attempt to do this, my browser scrolls up and down.)
2. Restart the game (the ESC key isn't working, dammit.)
3. Understand anything whatsoever about the jetpack mechanic, other than "Get out of jail free."
Zombies killed me several times as I attempted to understand the basic mechanics behind the game.

It's a poor excuse for a shooter wrapped up in a nearly unplayable package. Plus, as I was writing this review, the game crashed 5 seconds later.