I just finished my game! It is written in java, and i must say, i am quite happy with it.(I am 13 and i have use java for about a year now).
It has particles, sound, multiple levels(and it is easy to mod in more!*hint**hint*)
Timelapse cooming out some day next week!
You can find the game here!
You can find the game in the compo entries under “Alone with zombies!