Lanternbench

A reasoning test and logic puzzle game for Windows, Mac and Linux

Oddorithm

A reasoning test. Four puzzle chambers.

Start with an optional 24-question reasoning test for an estimated IQ, then explore four calm puzzle chambers. Take your time, with no time limits, no ads and no account.

Play free in your browser

The reasoning test and Pattern Foundry are free in the browser. The full game is 4.99 USD on itch.io for Windows, Mac and Linux.

Two Oddorithm screens: a Prism Workshop board where mirrors guide a light beam toward receivers, and the Workshop map with the reasoning test, the four puzzle chambers and the Mindprint.

Start with the reasoning test.

Twenty-four questions in four parts: figure grids, number series, turned shapes and figure analogies. Each part opens with a worked example and runs from easy to hard, with no timer and no hints. At the end you see an estimated IQ, a likely range, how you compare with the average and your strongest kind of reasoning, with a card to share.

The test is optional, and it is a short game test, not a clinical assessment. It is separate from the Mind Index.

Question 6 of 24: a three by three grid of star, cross and triangle figures with the last cell missing, and six answers below.
A figure grid question.
The result screen: an estimated IQ, a likely range, the strongest kind of reasoning, a score for each of the four parts and the note that it is not a clinical assessment.
The result screen, from one test run.

Four chambers, four kinds of reasoning.

  1. A Pattern Foundry puzzle: a row of panels with one missing and the building bench below.

    Pattern Foundry

    Study changing panels and rebuild the missing one: move, turn and flip a glyph, then set its studs.

  2. A Prism Workshop board with mirrors, a light beam and receivers.

    Prism Workshop

    Turn mirrors and splitters to guide light into receivers through their open side, and keep the red eye dark.

  3. An Echo Array puzzle: a history of events with one hidden card and a ring of sockets.

    Echo Array

    One event in a history of drops, swaps and turns is hidden. The open sockets of the final ring tell you which.

  4. A Constraint Cabinet puzzle with clue cards and two drawers filled.

    Constraint Cabinet

    Place shapes and letters in four drawers so every clue card is satisfied: same drawer, not together, left of, next to.

The Mind Index and Mindprint

Finish the sixteen calibration puzzles to see your Mind Index and Mindprint: a score from 0 to 100 for this game's puzzles and a bar for each chamber. It is separate from the estimated IQ and it is never compared with other players.

The Mindprint screen: a Mind Index out of 100 and one bar per chamber, with the note that it is a game score, not an IQ score.

How to get it

Oddorithm is on itch.io for Windows, macOS and Linux at 4.99 USD, with everything included. The complete reasoning test and the Pattern Foundry play free in the browser on the same page; browser progress does not carry over to the download. The game plays in English, French, German, Spanish, Italian, Dutch, Brazilian Portuguese, Japanese, Korean and Arabic. The Android version is in closed testing on Google Play, and the iPhone version is not out yet.

Get Oddorithm on itch.io

Android beta

Join in two steps with your Google account: join the tester group, then accept the invitation on Google Play and install.

1. Join the tester group 2. Accept the Play invitation

Plays offline · Ten languages · No ads, analytics or account

Privacy policy Support