Circuit Logic: Logic Gates

Circuit Logic is a digital logic puzzle game. Build working circuits out of real logic gates - AND, OR, NOT, XOR, NAND and NOR - across 95 hand-designed levels that run from your very first gate to a working memory cell.

Wire the inputs to the outputs, check your circuit against the full truth table, and then try to beat par with the fewest gates possible.

95 LEVELS ACROSS 19 CHAPTERS

The progression follows a real digital logic course:

• Introduction and Building Blocks - AND, OR, NOT
• XOR Mastery - parity and difference detection
• NAND and NOR - the universal gates
• Advanced, Expert and Master Circuits
• Binary Arithmetic and Signal Processing
• Ultimate Challenge and Grandmaster
• CPU Building Blocks - half adders and full adders
• Multi-Bit Arithmetic - ripple-carry addition
• Selecting and Decoding - multiplexers and decoders
• Toward a Computer
• Memory - latches and sequential logic

THREE STARS, HONESTLY EARNED

Every star has a stated meaning: solve the puzzle, solve it without hints, and solve it at or under par. Par is the gate count of the known minimal solution - so three stars means you found the tightest circuit, not just one that works.

VERIFIED AGAINST THE FULL TRUTH TABLE

Your circuit is checked against every row of the truth table, not a single test case. If it passes, it genuinely implements the function. That is why these puzzles hold up as practice for an actual digital logic or computer architecture course.

DAILY CIRCUIT

A new puzzle every day, seeded from the date, so every player in the world gets the same circuit. Compare your gate count and your time against everyone else.

TIME ATTACK

Race the clock across four difficulty levels: Easy, Medium, Hard and Extreme.

LEADERBOARDS AND THE CHIP VAULT

Global leaderboards for every level and every chapter, plus 37 achievement chips to collect across five rarity tiers - with gold variants and hidden eggs that only reveal themselves once you have earned them.

WHO IT IS FOR

• Computer science and electrical engineering students
• Anyone working through a digital logic or computer architecture course
• Puzzle players who want real depth instead of another match-3
• Hobbyists, makers and anyone who wants to think in gates

ALSO IN THE BOX

• Plays fully offline
• Guided tutorial for the opening levels
• Dark, circuit-inspired interface
• Progress and leaderboard name survive a reinstall

Start with a single AND gate and build your way to a working memory cell.