Skip to content
Expercepth

Puzzles · illusions · memory

Look
again.

Visual puzzles, hidden object puzzles, optical illusions, and memory challenges for curious readers who like to test their eyes and their brain.

  • Hidden objects
  • Optical illusions
  • Memory challenges
  • Pattern puzzles
  • Spot the difference

Play

Puzzles for your eyes

Visual puzzles, hidden-object scenes, illusions and memory grids. Free to play, right in your browser.

See them all

Warm-up

One tile is lying to you.

Every round, one square is a shade lighter than the rest, and the gap shrinks each time. It is a quick test of colour sensitivity, the same skill that finds a hidden key on a patterned rug.

  • Rounds one to three: a 4 × 4 grid, easy shades
  • Rounds four to seven: 5 × 5, the gap narrows
  • Round eight on: 6 × 6, trust your eyes

Round

1

Best

0

Looks left

One tile is a lighter shade. Tap it. Three wrong taps and the round ends.

What we make

Five ways to test your eyes

Browse the articles →
  • A busy isometric room with small objects camouflaged among the furniture

    01

    Hidden objects

    A crowded room, a short list, and things that blend into the wallpaper until they suddenly do not.

  • An impossible triangle standing on a warping op-art floor

    02

    Optical illusions

    Lines that bend, shapes that cannot exist, and the reasons your brain fills in what is not there.

  • A floating grid of match tiles mid-flip

    03

    Memory challenges

    Look, look away, recall. Pairs, sequences and grids that stretch your short-term memory.

  • A tessellated pattern with one glowing missing piece

    04

    Pattern puzzles

    Tessellations, sequences and the one piece that breaks the rule. Find it, then explain it.

  • Two nearly identical rooftop scenes side by side

    05

    Spot the difference

    Two scenes, a handful of changes. The last one is always the one hiding in plain sight.

  • Not sure where to start?

    Ask Expercepth Bot, the help bot in the corner. It knows the site, the texts and how accounts work.

    Or read the FAQ

Latest

Fresh from the articles

By text

Puzzles, delivered to your pocket.

Sign up for Expercepth texts and we'll send new puzzles and articles to your phone. Message frequency varies. Reply STOP at any time to cancel.

Expercepth | Puzzles that test your eyes