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Jul 8, 2012 | 6:59 AM EDT
  • Daily 2nd Place July 9, 2012

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UPDATE 4 (8th September 2012): IR/RATIONAL INVESTIGATOR ANNOUNCED! /sharedfiles/filedetails/

UPDATE 3: ir/rational has made the front page with 45,000 plays in under a week! Thank you everyone - and keep your eyes peeled for announcements in the coming months!

UPDATE 2: Walkthrough available here: /2012/07/irrational-walkt hrough.html

UPDATE 1: Made 10,000 views and the Popular Games list in 24 hours! Thanks to everyone who's played!

Argue the toss in a twisted tale of logic...

In ir/rational you complete, create and discredit arguments by selecting propositions and filling in the blanks. It's a puzzle game based on propositional logic, and a graphic adventure all in one - only here you don't so much need to escape the room as prove why you'd even want to.

- Unique, language-based argument system: formulate logical proofs to progress through the game

- Dark philosophical comedy by Tom Jubert, writer of Penumbra, Driver: San Francisco and FTL.

- 10 screens and roughly half an hour of intelligent, challenging and inventive gameplay

- Musical score by award-winning composer Mikko Tarmia

My website:
My narrative design blog, Plot is Gameplay's Bitch:

- Click to progress story
- Complete the arguments by selecting options from the drop-down menus

NB Some systems don't display all the dropdown options at once, and you have to use the arrow keys to scroll.

If you can't see the right answer, chances are you can resolve the problem with the arrow keys. Hope it's not dampened your enthusiasm!



Rated 5 / 5 stars July 16, 2012

I enjoyed this game too much to be studying the humanities. (CALCULUS TAKE ME BACK MY LOVE.)

Fun, smart, not-tear-your-hair-out-difficult.. Why aren't there more games like this?

People find this review helpful!


Rated 5 / 5 stars July 22, 2012

This game is amazing....I love the ending aswell, because i hate how the bad guys usually dont win.


Rated 5 / 5 stars July 30, 2012

This game really made me think... a lot. The entire sequence of the game being mental stress, followed by a (terrible) relief lead me to believe that nothing has any meaning. Great game though!


Rated 5 / 5 stars August 11, 2012

@Elvenghost try scrolling down with your arrow keys :)


Rated 5 / 5 stars July 17, 2012

Loved it!! More games like this that get you thinking, would like to see more with a longer storyline, the ending was a little predictable, but this is the best game I have played in a couple of years, 5 stars =)