Goal
Match identical numbers to clear all pairs.
A concentration-style memory card game shaped by 2-second flashes, sudden death, and extra-flash penalties.

Memory Lock is a concentration-style memory card game where uncleared cards flash for just 2 seconds. One mistake ends the run, and each extra flash adds time penalties. Decide when to trust memory and when to reveal again for the fastest clear.
Match identical numbers to clear all pairs.
Uncleared cards flash for 2 seconds.
Some cards are rotated 180 degrees.
99 stages total. Every 11 stages, the level increases.
| Level | Stages | Pairs | Cards | Must rotate |
|---|---|---|---|---|
| 1 | 1–11 | 4 | 8 | 0 |
| 2 | 12–22 | 5 | 10 | 0 |
| 3 | 23–33 | 6 | 12 | 1 |
| 4 | 34–44 | 7 | 14 | 2 |
| 5 | 45–55 | 8 | 16 | 2 |
| 6 | 56–66 | 9 | 18 | 3 |
| 7 | 67–77 | 10 | 20 | 4 |
| 8 | 78–88 | 11 | 22 | 5 |
| 9 | 89–99 | 12 | 24 | 6 |
You must decide and tap quickly right after a flash, training processing speed.
You need to retain brief card positions between flashes, strengthening working memory.
Numbers indicate how many mines surround a tile. Inferring safe tiles from these clues trains logical reasoning.
Choosing when to use a flash (or wait) trains decision control.
Select Training

A route-design puzzle where you cannot stop freely. Plan stopping points, clear all spots, then stop on the exit.

A logic-and-control time attack where you release tangled signal lines in the right order.

A logic puzzle where you choose only the needed connections from many candidate lines to satisfy numbered nodes.

A tactile speed puzzle. Move, rotate, and snap pieces together—your intuition and control become your time.

Clear matching pairs in the given order—speed and memory decide your time.

A visual-search speed event where you instantly spot the only identical pair hidden among many items.

A fast-paced minesweeper-inspired cognitive game where numbers flash briefly. Memorize clues, deduce safe tiles, and clear the board.
Read these next to connect the full picture of cognitive measurement and training.