Pixel Mirror
A pattern of orange pixels appears on a grid. Three seconds. Then the grid goes blank, and you have to put them back where you saw them. Echo Tap, but for space instead of time.
What it is
Pixel Mirror is the spatial counterpart to Echo Tap (#04). Where Echo Tap tests your memory for sequences in time, Pixel Mirror tests your memory for patterns in space. A 4×4 grid lights up with a random pattern of "pixels"; the pattern stays visible for three seconds; the grid goes blank; you tap the cells where you saw the pixels. Get them all right and you advance to the next round, where the grid is one cell larger on each side and the pattern is slightly denser.
How to play
- Watch the pattern. Orange cells. Three seconds. You can't interact during this.
- Reproduce it. The grid goes blank. Tap the cells that were lit. Tap again to unmark.
- Submit. Press SPACE or hit Submit when you're done.
- Scoring. Each correct cell is +1; each wrong cell or missed cell is 0. All correct = next round, larger grid.
- The grid grows. 4×4, then 5×5, then 6×6. The density of pixels grows too — round 1 has 6, round 5 has 14.
The trick
Trying to memorise pixel positions one at a time is hopeless past a 5×5 grid. The actual technique is to look for shapes — almost any pattern you see has clusters, lines, or symmetries you can name. "Three across the top-left, two diagonal at bottom-right, lone pixel in the middle" is six items remembered as three. The 6×6 round usually has between 10 and 14 lit cells; expert players parse those as four or five shapes, not as ten or fourteen pixels.
What this scored well on
- The complementary pairing with Echo Tap. Playing both back-to-back exercises different memory systems; we wanted that.
- Honest scoring. Partial credit is shown clearly — green outline for "you got this right", red for "you put this where there was nothing", soft orange for "this was lit but you missed it". The post-round screen tells you exactly what you saw versus what you remembered.
- Pattern fairness. Patterns are generated with a constraint that prevents pure random clouds; we lean toward patterns with at least some structure, on the theory that "memorable" patterns are more fun than "noise".
What it gets wrong
Pixel Mirror's three-second preview is the same length regardless of grid size. That makes the larger rounds significantly harder per-pixel than the smaller ones, which some players love (it's why the score curve looks the way it does) and some find unfair. We tested with scaling preview time (4 seconds at 5×5, 5 at 6×6) and decided against it — the constant clock makes the difficulty curve feel like progression, not handicap.
Who it's for
Pixel Mirror is for anyone who's done the "memorise the cards" segment of a memory-themed game show and felt like it suited them. It's also a good general spatial-memory drill, especially for designers, programmers, and anyone whose work involves holding two-dimensional layouts in their head.
Where we'd point you next
If you liked the memory work, try Echo Tap (#04). If you liked grid puzzles in general, watch for Sort Quick (#14 — sliding tile puzzle) in the second batch.
Released · 12 May 2026 · Editor's score 4.2 / 5 · Reviewed by Bill