Critical vs Signal Lines

Stop the reactor from going critical by delivering water. Robots are expensive though, so we use cheap expendable personnel instead. Money earned ramps up incrementally the longer you last. Survive as long as possible to maximize your income! Spend your hard earned cash to unlock permanent upgrades. Invest wisely to make each new run longer than the last. Tons of upgrades to buy, research to be done, and secrets to uncover. Give it a try! The longer you can keep the reactor from exploding, the more money you’ll make. Start small and watch your income grow exponentially as you survive longer and longer. Delay the inevitable cataclysm as long as possible and watch your cashflow go through the roof.

Signal Lines is a clean logic puzzle where every board is a small circuit waiting to be solved. Rotate arrows, guide colored signals to matching receivers, avoid collisions, and discover the perfect route. Play short handcrafted levels, chase perfect moves, and return each day for a fresh Daily Circuit. The rules are simple: connect each color, keep signals from crashing, and turn a messy grid into a beautiful path. Features: - Clean 2D logic puzzles built for quick mobile sessions - Rotate arrows and route colored signals - Avoid collisions, blockers, wrong receivers, and crossed paths - Unlock new mechanics like bridges, gates, splitters, mirrors, relays, and delays - Perfect solve medals for mastery - Fresh daily puzzle and streak rewards - Relaxing visuals, readable symbols, and satisfying signal animations - Optional hints when you need a nudge Signal Lines is made for players who enjoy flow puzzles, arrow puzzles, route puzzles, color logic, and daily brain games.