Comment by hot_gril

I made a more poker-esque game that doesn't require any dice or other materials, cause my friend and I were waiting in line forever somewhere. You play as a buyer haggling with a seller over some shiny vase. Each player establishes a secret random number*, being the max the buyer will pay (demand) or the min the seller will sell for (supply). Then they haggle, then they win the difference between the agreed-upon price and their secret number. Or, either can kill the deal at any time, and both are penalized based on their secret number**.

It's limited info, random, there are weak or strong starting positions, and you can bluff. Tournament style might be interesting because of the Prisoners' Dilemma. But I gotta say, it's a lot nerdier than this subway game.

* Both think of two numbers 0-50 and only say one aloud. Add the other person's number to your secret one and mod by 50. Then buyer adds 50.

** Seller penalized N, buyer penalized N - 50 iirc.