UD5 Toolkit
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.
Tag: Memory & Sequence Games
10+ toolsMemory Card Matching Game - Online Flip & Find Pairs
Classic memory card game with emoji or color themes. Select grid size and try to find all pairs in minimum moves. Brain training fun.
WeakMap & WeakSet Demo - Online Garbage‑Collected Collections
See how WeakMap and WeakSet work. Add objects as keys and watch references. Understand memory‑efficient collections.
JavaScript Memory Heap Checker - Online performance.memory
Display used/total/limit JS heap size using performance.memory. Take snapshots and see growth. Simple memory leak detection.
Page Replacement Simulator - Online FIFO, LRU, Optimal
Simulate memory page reference strings with FIFO, LRU, and Optimal algorithms. See page fault count. OS concept demo.
Number Memory Trainer - Online Recall Digits
A sequence of digits flashes for a few seconds. Type it back. Increase length. Improve your working memory.
Tab Counter & Memory Estimator - Online Window Stats
See how many tabs you have open and estimate memory usage based on navigator object. Fun productivity check.
Simon Says Color Game - Online Memory Challenge
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Memory Sequence Game - Online Watch & Repeat Colors
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Simon Says Game - Online Memory Sequence Challenge
Repeat the growing color sequence. How far can you go? Classic memory game with sound and animations.