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A binary release of trained deep reinforcement learning models trained in the Atari machine learning benchmark, and a software release that enables easy visualization and analysis of models, and comparison across training algorithms.
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Atari Zoo

The aim of this project is to disseminate deep reinforcement learning agents trained by a variety of algorithms, and to enable easy analysis, comparision, and visualization of them. The hope is to reduce friction for further research into understanding reinforcement learning agents. This project makes use of the excellent Lucid neural network visualization library, and integrates with the Dopamine model release.

A paper introducing this work was published at the Deep RL workshop at NeurIPS 2018: An Atari Model Zoo for Analyzing, Visualizing, and Comparing Deep Reinforcement Learning Agents.


This software package is accompanied by a binary release of (1) frozen models trained on Atari games by a variety of deep reinforcement learning methods, and (2) cached gameplay experience of those agents in their training environments, which is hosted online.

Installation and Setup


To install, run install after installing dependencies.


import atari_zoo
from atari_zoo import MakeAtariModel
from pylab import *

algo = "a2c"
env = "ZaxxonNoFrameskip-v4"
run_id = 1
tag = "final"
m = MakeAtariModel(algo,env,run_id,tag)()

# get observations, frames, and ram state from a representative rollout
obs = m.get_observations()
frames = m.get_frames()
ram = m.get_ram()

# visualize first layer of convolutional weights
session = atari_zoo.utils.get_session()


conv_weights = m.get_weights(session,0)

From the command line you can run: python -m atari_zoo.activation_movie --algo rainbow --environment PongNoFrameskip-v4 --run_id 1 --output ./pong_rainbow1_activation.mp4


Example jupyter notebooks live in the notebook directory that give further examples of how this library can be used.

A starter colab notebook enables you to check out the library without downloading and installing it.

Web tools

Source code for training algorithms that produced zoo models

We trained four algorithms ourselves:

We took trained final models from two algorithms (DQN and Rainbow) from the Dopamine model release:


To cite this work in publications, please use the following BibTex entry:

title = {An Atari Model Zoo for Analyzing, Visualizing, and Comparing Deep Reinforcement Learning Agents},
author = {Felipe Such, Vashish Madhavan, Rosanne Liu, Rui Wang, Pablo Castro, Yulun Li, Ludwig Schubert, Marc G. Bellemare, Jeff Clune, Joel Lehman},
booktitle = {Proceedings of the Deep RL Workshop at NeurIPS 2018},
year = {2018},

Contact Information

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