CERT

A choose-your-own-adventure book of shape-packing logic puzzles set in a dreamlike world.

Here's an excerpt from CERT's itch.io description:

CERT is an explorable puzzle book. Discover a surreal, dreamlike world filled with classic deduction-based paper puzzles!

Discuss this game with fellow thinky fans on our Discord

Please note: This is not an official server for this game.

Join now

Send us your feedback, suggestions, or corrections

Similar games

Solve aquatic nonograms where water flows down with gravity.

Essential

Uncover the hidden language of the LOK through letter-based logic puzzles.

Free

A playful puzzle book with clipped instructions.

Minesweeper-style logic puzzles on a variety of grids with no guessing required.

Free

Navigate an extraterrestrial land of sudoku variants to unlock further rules and abilities.

Free

Pick up variant tools and fight self-contained bosses to explore the connected grids of planet Sudoku-45.

Find the rules behind each suit and face card to solve the underlying logic puzzles.

Free

Discover the logic rules of the relics and learn of the settlers that left them behind.

Get a free thinky game to play and discuss, plus the latest thinky news and reviews, directly to your inbox every 2 weeks!