Hadron for Mac

From Arizona Software:

Hadron is a think-shoot-them-escape game. You will have to face many intelligent bugs and evil people to exit this terrific electronic world. A powerful level editor is included with Hadron. You can create as many level as you want and play with them.
If you would like Hadron to include one or more level that you've created, just send me the level file and I'll include it in the next version of Hadron. I don't guarantee that all level will be included. Also, level may be subject to change before being included into Hadron.