: Android O/S : 2.2+
: Welcome world - Android h, played 3 million players.
Solve puzzles using . Help get goal contraptions, bridges .
Open sandbox editor over 150 unique objects anything from a simple teeter totter working calculator. Use electronics system games. Upload community website creations.
Gain control robot Mode.
New official puzzle levels added weekly. New coming!
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https://play.google.com/store/apps/d...hack.principia
Principia v1.1.1 Instructions: thanks shooter
