This game has no storyline. It has no game ending. You must kill zombies, which are a little cliche, but I don't hold that against you, and there are no levels. This game cannot be salvaged. However, you have made a few other games, and from the comments the rest are decent(ish). I played Cell and all you need is a storyline, which would improve your games no end. You'd still need to add a bit, but try working on storylines first.