Memory Card Matching Game - Online Flip & Find Pairs
Classic flip‑to‑match pairs game. Choose grid size and card theme. Tracks moves and time. All local.
UD5 Toolkit
Classic flip‑to‑match pairs game. Choose grid size and card theme. Tracks moves and time. All local.
Classic memory card game with emoji or color themes. Select grid size and try to find all pairs in minimum moves. Brain training fun.
See how WeakMap and WeakSet work. Add objects as keys and watch references. Understand memory‑efficient collections.
Display used/total/limit JS heap size using performance.memory. Take snapshots and see growth. Simple memory leak detection.
Simulate memory page reference strings with FIFO, LRU, and Optimal algorithms. See page fault count. OS concept demo.
A sequence of digits flashes for a few seconds. Type it back. Increase length. Improve your working memory.
See how many tabs you have open and estimate memory usage based on navigator object. Fun productivity check.
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Repeat the growing color sequence. How far can you go? Classic memory game with sound and animations.