It would be pretty amazing if different areas on the zone to click would give slightly different amounts of income for clicking, such as the sun in the prosthetic man zone giving 1*1.03 times clicking income. It wouldn't particularly affect gameplay, but it would be fun to find the perfect spot to click.
To get to the final boss, whenever one of your units gets down to one life, sell their life upgrade and buy the one a tier below it. It will give them more lives, for no cost. Great for trying to get to the end.
This game is honestly the best I've played on kongregate, with maybe a single exception. Loving how the mismatched pieces of your ship make it look epic!
Thanks for feedback. We welcome your suggestions and ideas.