Freemium? C'mon guys.
I can understand making the better guardians locked, since it's an extra that doesn't impact the game for other players who can't pay, but putting in a barrier to finishing the game is just bad design.
Day 9: Reached Mars, sent out Sgt. Hedgehog again for a test flight.
It's been 17 minutes, and I haven't touched the controls in 5. I think he's up there forever now.