RLCard: A Toolkit for Reinforcement Learning in Card Games

RLCard is a toolkit for Reinforcement Learning (RL) in card games. It supports multiple card environments with easy-to-use interfaces. The goal of RLCard is to bridge reinforcement learning and imperfect information games, and push forward the research of reinforcement learning in domains with multiple agents, large state and action space, and sparse reward. RLCard is developed by DATA Lab at Texas A&M University.

• Official Website: http://www.rlcard.org
• Paper: https://arxiv.org/abs/1910.04376

Installation

Make sure that you have Python 3.5+ and pip installed. We recommend installing rlcard with pip as follow:

git clone https://github.com/datamllab/rlcard.git
cd rlcard
pip install -e .

Or you can directly install the package with

pip install rlcard

Examples

Please refer to examples/. A short example is as below.

import rlcard
from rlcard.agents.random_agent import RandomAgent

env = rlcard.make('blackjack')
env.set_agents([RandomAgent()])

trajectories, payoffs = env.run()

We also recommend the following toy examples.

• Playing with random agents
• Deep-Q learning on Blackjack
• Running multiple processes
• Having fun with pretrained Leduc model
• Leduc Hold'em as single-agent environment
• Training CFR on Leduc Hold'em

Demo

Run examples/leduc_holdem_human.py to play with the pre-trained Leduc Hold'em model:

>> Leduc Hold'em pre-trained model

>> Start a new game!
>> Agent 1 chooses raise

=============== Community Card ===============
┌─────────┐
│░░░░░░░░░│
│░░░░░░░░░│
│░░░░░░░░░│
│░░░░░░░░░│
│░░░░░░░░░│
│░░░░░░░░░│
│░░░░░░░░░│
└─────────┘
===============   Your Hand    ===============
┌─────────┐
│J        │
│         │
│         │
│    ♥    │
│         │
│         │
│        J│
└─────────┘
===============     Chips      ===============
Yours:   +
Agent 1: +++
=========== Actions You Can Choose ===========
0: call, 1: raise, 2: fold

>> You choose action (integer):

Documents

Please refer to the Documents for general introductions. API documents are available at our website.

Available Environments

We provide a complexity estimation for the games on several aspects. InfoSet Number: the number of information sets; Avg. InfoSet Size: the average number of states in a single information set; Action Size: the size of the action space. Name: the name that should be passed to env.make to create the game environment.

Evaluation

The perfomance is measured by winning rates through tournaments. Example outputs are as follows:

Cite this work

@misc{zha2019rlcard,
    title={RLCard: A Toolkit for Reinforcement Learning in Card Games},
    author={Daochen Zha and Kwei-Herng Lai and Yuanpu Cao and Songyi Huang and Ruzhe Wei and Junyu Guo and Xia Hu},
    year={2019},
    eprint={1910.04376},
    archivePrefix={arXiv},
    primaryClass={cs.AI}
}

Contributing

Contribution to this project is greatly appreciated! Please create an issue for feedbacks/bugs. If you want to contribute codes, please refer to Contributing Guide.

Acknowledgements

We would like to thank JJ World Network Technology Co.,LTD for the generous support.