Gym Retro
OpenAI released Gym Retro with over 1,000 games (up from ~100 Atari/Sega titles), providing a much larger RL benchmark platform for transfer learning research.
Excerpt
We’re releasing the full version of Gym Retro, a platform for reinforcement learning research on games. This brings our publicly-released game count from around 70 Atari games and 30 Sega games to over 1,000 games across a variety of backing emulators. We’re also releasing the tool we use to add new games to the platform.
Read at source: https://openai.com/index/gym-retro