Copper Trails: Circuit Puzzle

Route traces like on a real circuit board – no soldering iron required.

In Copper Trails you connect pads of the same net: GND to GND, VCC to VCC, SDA to SDA. Sounds easy? Traces of different nets must never cross, components block your way, and on hard boards you switch between two layers using vias. Every board is solvable – but can you find the shortest route?

HOW IT PLAYS
• Drag traces from pad to pad with your finger; they snap to the grid
• Resistors, LEDs, capacitors, transistors and ICs are real obstacles – only their pads can be connected
• GND and VCC often join several pads: branches are allowed
• Two layers and vias: cross traces by switching to the other side of the board
• Clearance rule on hard boards: traces of different nets must not run side by side
• Earn stars for efficient solutions – beat par!

GAME MODES
• Basics: 30 boards in three difficulty tiers
• Arcade: endless new boards against the clock, every solved board adds time
• Daily challenge: the same board for everyone each day – keep your streak alive
• Tutorial: learn traces, layers, vias and ground step by step

THOUGHTFULLY MADE
• Glowing neon look for portrait and landscape, phone and tablet
• Hints when you are stuck – undo and redo any time
• Colorblind-friendly: every net also has its own symbol
• Sound, vibration and animations can be turned off
• Plays fully offline, no account needed
• In English and German

For electronics fans, makers and anyone who loves logic puzzles.

Recent changes:
Bugfix release