open_spiel

Repository facts

Stars

5,539

Forks

1,203

Open issues and pull requests

86

Primary language

C++

License

Apache License 2.0 (Apache-2.0)

Owner

google-deepmind · Organization

Created

Jul 22, 2019

Last push

Aug 31, 2026

Topics

• cpp
• games
• multiagent
• python
• reinforcement-learning

Rank #1,460 of 9,507 in AI on GitHub, by stars. Data from the GitHub API, fetched Oct 18, 2026; star counts change daily. Stars measure popularity, not quality or safety, and a listing is not an endorsement. How this list is made

Related projects

Projects that share this one’s GitHub topics.

• 8,946

  Rank 8,946: sjtu-marl/malib

  A parallel framework for population-based multi-agent reinforcement learning.

  558 starsPythonMITLast push Dec 14, 2023

• 943

  Rank 943: VowpalWabbit/vowpal_wabbit

  Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, a…

  8,730 starsC++Other licenseLast push Oct 15, 2026

• 5,976

  Rank 5,976: rl-tools/rl-tools

  The Fastest Deep Reinforcement Learning Library

  1,037 starsC++MITLast push Oct 18, 2026

• 7,859

  Rank 7,859: utilForever/RosettaStone

  Hearthstone simulator using C++ with some reinforcement learning

  684 starsC++AGPL-3.0Last push Oct 18, 2026

• 6,360

  Rank 6,360: instadeepai/Mava

  🦁 A research-friendly codebase for fast experimentation of multi-agent reinforcement learning in JAX

  938 starsPythonApache-2.0Last push Sep 9, 2026

• 1,881

  Rank 1,881: BehaviorTree/BehaviorTree.CPP

  Behavior Trees Library in C++. Batteries included.

  4,250 starsC++MITLast push Oct 18, 2026