Logic Gates - Free Online Circuit Puzzle Game

SELECT LEVEL

Chapter 1: AND, OR
Chapter 2: +NOT
Chapter 3: +XOR
Chapter 4: All Core 4
Chapter 5: +NAND, NOR
Chapter 6: +XNOR
Level 1 Stars: 0/90

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How to Play

Build circuits with logic gates to match the target truth table.

Your Goal: Make the circuit output match the target for ALL input combinations.

The Gates:

AND Output 1 only when ALL inputs are 1

OR Output 1 when ANY input is 1

NOT Inverts input (0->1, 1->0)

XOR Output 1 when inputs DIFFER

NAND NOT of AND

NOR NOT of OR

XNOR Output 1 when inputs are SAME

Controls: Drag gates from the palette to empty slots. Click input switches to toggle 0/1. Use TEST to see signal flow, CHECK to verify your solution.

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