Fallacymania is a game developed by Moscow LessWrong community. Main goals of this game is to help people notice fallacies in arguments, and of course to have fun. The game requires 3-20 players (recommended 4-12), and some materials: printed A3 sheets with fallacies (5-10 sheets), card deck with fallacies (you can cut one A3 sheet into cards, or print stickers and put them to common playing cards), pens and empty sheets, and 1 card deck of any type with at least 50 cards (optional, for counting guessing attempts). Rules of the game are explained here:

https://drive.google.com/open?id=0BzyKVqP6n3hKQWNzV3lWRTYtRzg

This is the sheet of fallacies, you can download it and print on A3 or A2 sheet of paper:

https://drive.google.com/open?id=0BzyKVqP6n3hKVEZSUjJFajZ2OTA

Also you can use this sheet to create playing cards for debaters.

When we created this game, we used these online articles and artwork about fallacies:

http://obraz.io/ru/posters/poster_view/1/?back_link=%2Fru%2F&lang=en&arrow=right
http://www.informationisbeautiful.net/visualizations/rhetological-fallacies/
http://lesswrong.com/lw/e95/the_noncentral_fallacy_the_worst_argument_in_the/

Also I've made electronic version of Fallacymania for Tabletop Simulator (in Steam Workshop):

http://steamcommunity.com/sharedfiles/filedetails/?id=723941480

Too many people attempt to use logic when they should be using probabilities - in fact, when they are using probabilities, but don't mention it. Here are some of the major fallacies caused by misusing logic and probabilities this way:

1. "It's not certain" does not mean "It's impossible" (and vice versa).
2. "We don't know" absolutely does not imply "It's impossible".
3. "There is evidence against it" doesn't mean much on its own.
4. Being impossible *in a certain model*, does not mean being impossible: it changes the issue to the probability of the model.

Common fallacies in probability

On the Stupid Questions Thread I asked

I need some list of biases for a game of Biased Pandemic for our Meet-Up. Do suitably prepared/formatted lists exist somewhere?

But none came forward.

Therefore I created a simple deck based on Wikipedia entries. I selected those that can be presumably be used easily in a game, summarized the description and added an illustrative quote.

The deck can be found in Dropbox here (PDF and ODT).

I'd be happy for corrections and further suggestions.

ADDED: We used these cards during the LW Hamburg Meetup. They attracted significant interest and even though we did use them during a board game we drew them and tried to act them out during a discussion round (which didn't work out that well but stimulated discussion nonetheless).

Mentions include selection bias, lack of reproduction of results, naturalistic fallacy, status signalling, habituation, science as attire, and maybe some I didn't catch.

http://www.youtube.com/watch?v=3g1denSoAbc&feature=player_embedded

http://www.yourlogicalfallacyis.com

Just printed an A3 of this.

See now http://lesswrong.com/lw/c9u/logical_fallacies_poster_a_lesswrong_adaptation/