Circuits
Wire it right and it glows. Wire it wrong and it pops.
Build circuits from a numbered kit so every bulb meets its goal.
How to play
- Read the permanent goal on each numbered tile. Place every part from the kit in a gap between dots; the matching numbers keep the board easy to follow.
- Draw wires between dots to connect the circuit. Drag a part to move it, tap a wire to remove it, and use Undo to step back through construction changes.
- Turn on Power to test the whole circuit against every goal. Use Tester to compare readings with requirements, or open the free Hint table to inspect the required states.
- A solved circuit earns effort points plus accuracy and time bonuses. Placements, relocations and protection pops count as moves; wiring and testing have no direct move penalty. Undo never refunds a counted move.
- Your construction is saved so you can resume with Power off. Revealing a working circuit ends the run without a score.
What it trains
Reasoning about cause and effect: predicting how connections change a circuit, comparing readings with goals, and planning a complete solution. Explore Logic training →
Improvement figures are observed in-app score gains, backed by peer-reviewed cognitive-training research.
Difficulty
Choose a tool and Parts, the size of the puzzle’s own solution, from 2 up to 12, or climb 49 Battery levels. Each puzzle is generated fresh, with goals to satisfy and a difficulty based on the reasoning needed to solve it.
Play Circuits with friends
Invite friends to a Circuits challenge in Apexwit Versus. Everyone gets the same challenge, plays on their own time, and compares results on a shared leaderboard. A free account is required to create or join a room. See how Versus works →
Related Logic games
Free to play · No signup required · Works on web, iOS & Android
Challenge friends in Versus — create a free account →Frequently asked questions
Is Circuits free to play?
Yes — Circuits is free to play at every difficulty on Apexwit, with no ads and no signup required. An optional subscription only adds cloud backup so your scores and streaks sync across devices.
Do I need an account to play Circuits?
No. You can play Circuits instantly on the web or in the iOS and Android apps — no signup needed. Versus multiplayer requires a free account, and cross-device sync requires a paid plan.
What does Circuits train?
Reasoning about cause and effect: predicting how connections change a circuit, comparing readings with goals, and planning a complete solution.
What devices can I play Circuits on?
Apexwit runs in any modern web browser and as an app on iOS and Android, so you can play Circuits on a computer, phone or tablet — and pick up where you left off when you sync your progress.