Click on cells to toggle their state. Then use the controls below to start the simulation, pause it, clear the grid, or randomize the board. Adjust the grid size as desired and observe how simple rules can create complex patterns!
Test your memory with a classic four-color memory sequence game. Hear tones and match the pattern to achieve high scores, saved to local storage.
Test and improve your reaction speed with our FPS Reaction Time Trainer. Measure your click reaction time after a visual cue, track your attempts, and view your progress.
Draw together in real-time with friends using peer-to-peer connections. Create or join a shared canvas — no server, no signup, just collaborative creativity.
Convert between decimal numbers and Roman numerals instantly. Supports numbers from 1 to 3,999,999 with proper notation and random number generation for practice.
