Logic Gate Puzzles
Build the given truth table with AND, OR, NOT, XOR and NAND gates across 16 levels; earn three stars with the fewest gates. Your progress, achievements and best scores are saved in your browser.
// OTHER SIMULATIONS
36 kV Substation & SCADA Operator
Operate 36 kV MV substations, manage transformers and bus couplings with LOTO safety interlocks. Experience SCADA operations with live single-line diagrams, relay fault scenarios, and realistic switchgear audio.
Intermediate · 20-40 min
Panel Master
Choose the breaker, RCD and cable size for each load of a dwelling; learn why a wrong choice fails, with reasons.
Advanced · 15-25 min
Circuit Lab
Place batteries, resistors, LEDs, switches and meters on the board; watch the current with a real DC solver and solve 10 missions.
Intermediate · 20-40 min
Interactive C++ Course
An 18-lesson C++ course in your browser where you earn XP: explanations, code, output prediction and bug hunting.
Beginner · 30-45 min
Virtual Oscilloscope
Measure waves from a signal generator on a 2-channel scope with XY mode and cursors; solve 8 measurement missions.
Intermediate · 15-30 min
Cyber Intelligence Simulation
10-question rounds from a 60-question pool: hardware, networking, electrics, software and AI; timer, combo and lifeline.
Beginner · 5 min (tur)
Systems Engineering Simulator
Clear bottlenecks during an 8K render, upgrade the hardware and keep the system alive for 10 minutes without a crash.
Intermediate · 8-10 min