Fuel Lab

FUEL LAB — Where chemistry meets circuits. Build rocket fuel by mixing colored compounds. Route electrical cables to power the launch pad. Master 50 hand-crafted puzzles across five themed laboratories — from Earth's launchpad to volcanic depths. KEY FEATURES - 50 unique puzzle levels — no two alike - Two puzzle systems: Fuel sorting and Cable routing - Chemical reactions: blue + yellow = green, red + yellow = orange, and more - 5 atmospheric labs: Earth, Moon Base, Orbital Lab, Deep Sea, Volcanic Core - Star rating system — perfect every level - 100% offline — play anywhere - No ads, no timers, no energy meters HOW TO PLAY - Pour fuel between test tubes - Mix colors to create new compounds - Reach the target colors in your fuel tank - Rotate cable pieces to connect circuits - Hit LAUNCH when both systems are ready Designed for thinkers. Built for clean play. No gimmicks — just smart puzzles, beautiful visuals, and that satisfying click when everything connects. Suitable for all ages. IN-APP PURCHASE The first 10 levels are free. To unlock all 50 levels and any future content, a single one-time In-App Purchase ("Full Unlock") is available for $2.99 USD. This is a non-consumable purchase, so it can be restored on any device with the same Apple ID via the Restore Purchase button in Settings. No subscriptions, no recurring fees, no advertisements. PRIVACY Fuel Lab does not collect, store, or transmit any personal information. The game works entirely offline on your device. Game progress is saved locally only.