This has potential to be a really good game soon! Some ideas for later updates: -1: Let the soldier walk through trees. Not exactly. Well, let me explain: The trees are 3D or at least there look like this. You could add a log in the middle of each tree (under it, so you actually can't see it). Just a circle on the ground. You can't walk through the log but through the leaves. The soldier is of course under the leaves then. -2: Starting and landing of the helicopter. Would be nice if the helicopter has two phases. One in the air and one on the ground. Then you can prevent the helicopter from landing on trees for example. (Maybe a parachute for the soldier, if he exits in the air. The helicopter crashes and explodes then, of course. This is for a later update, I guess.) ;) -3: Start/Stop helicopter's engine. If no one is inside the helicopter, the helicopter's rotors (not sure if it is the correct word) should not turn.

By the way, I found a small bug. The enemies explode when they have contact with each other. But if one collide with another one which just spawned on the edge before it got released, then the one on the edge does not explode, it only disappears after a short time.

3464 30xx (forgot) Tricky, but not impossible (yet). ;)