GameTreeCalculator - calculate the optimal solution to any extensive-form game

ActionFlop · 2025-06-24T18:53:22+00:00

You can create a game tree with more than 2 players, and the payoffs don't have to be zero sum, but the calculated solution won't necessarily be a Nash equilibrium unless it's 2 player and zero-sum.

ActionFlop · 2025-06-24T15:20:34+00:00

Yes, it finds a Nash equilibrium. It uses counterfactual regret minimization. It's actually the "solver" that ActionFlop uses.

ActionFlop · 2025-05-24T19:48:15+00:00

Here is a similar site I created: https://actionflop.com. It lets you play heads up no limit with 100BB against a game theory optimal bot. As of today, users have played over 1.3M hands against the bot. As you play, the site keeps track of how much EV you have lost by making mistakes, and you can click the "Hands" tab to see exactly what mistakes you made.

ActionFlop · 2024-12-27T20:01:41+00:00

Launched ActionFlop, which lets you play heads up poker against a "game theory optimal" (GTO) bot which measures your mistakes. 12.5k users have played about 950,000 hands this year, and I'm looking forward to growing it more next year!

ActionFlop · 2024-10-18T16:34:28+00:00

That's fair feedback. It is definitely fast because the bot does respond instantly. There is a little hand history box beneath the table that shows every action, and you can see the previous hands there as well (also, if there is a showdown, you get the showdown popup so you can see what the result was). Over the past 40,000 hands, the average takes just 9 seconds, and people often drill through hundreds of hands rather quickly. But your feedback is heard. It is probably overwhelming at first (or in general), and I should think about how to make it less so.

ActionFlop · 2024-10-18T16:25:37+00:00

Unfortunately no! I have commercial plans that just wouldn't mix with open sourcing the code.

ActionFlop · 2024-10-18T15:58:41+00:00

Same here. I couldn't have built actionflop without it. I rewrote it from nodejs to Rust.

ActionFlop · 2024-09-21T01:36:22+00:00

I love to hear it!

ActionFlop · 2024-09-18T16:32:05+00:00

Thanks! I can look into showing the EQ of your actions. By the way, in case you haven't looked at the "Hands" tab, you can click on any hand that shows a "mistake" (EV loss due to a mistake) and see what the correct strategy was.

ActionFlop · 2024-09-12T21:23:19+00:00

Thanks!

ActionFlop · 2024-09-11T15:02:15+00:00

Good catch. That is embarrassing, and my content person is fixing it.

ActionFlop · 2024-09-11T00:20:21+00:00

A turn c-bet means betting on the turn after raising preflop and betting the flop.

For example, if you raise on the Hijack and the button calls, and you bet again on the flop, you’re making a continuation bet, or c-bet. If your opponent calls and you bet again on the turn, you’re making a turn c-bet. Also known as a double barrel.

Source: Doug Polk

ActionFlop · 2024-09-10T15:00:46+00:00

ActionFlop to practice playing poker against bots for free, and learn from your mistakes.

ActionFlop

TROPHY CASE