Simply take your idea, and pare it down - simplify it, preferably to it's funnest parts, and aim to complete that smaller portion in-time.
If you get it done early, then you can add/tweak it more with the remaining time you have.
A member registered Aug 27, 2018 · View creator page →
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Pilot! Can you save yourself from the shafts of darkness and land your craft safely?
Survival