controls are a bit rough, but always fun to do some of those rube golberg contraptions.
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took me a little while to see it was Q and E (of course one should read the f'ing manual). then those pipes were always looking the wrong direction. also for deletion, maybe a right click would be nice.
This doesn't detract too much though, and i have some of these annoyances in my game too.... never enough time for complete polish =)