There is a reason why a ~16 year old, 2D game (this one) is my favorite... It has unbelievable depth! The sky is the limit with this game. You are very lucky to have found it.
I've been playing this game for a while and it's by far my favorite game ever. It's pretty straight forward at first but once you get into higher levels of gameplay it gets VERY interesting. Don't expect high end graphics; this game is all about the gameplay. It has a pretty small community so if it looks interesting, you might ask a friend to try it with you. If you want some help getting better or have any questions about the game, just ask one of the members to help you. Most will be happy to help and can show you how much depth this game has! It's truly a work of art.