@zhaolongkzz why has this PR not been merged yet? I encountered the same problem. Are there any other changes that need to be made?

@veds12 you can install gym==0.10.5 or modify code like:
in code multiagent-particle-envs/multiagent/multi_discrete.py

import gym
# from gym.spaces import prng             # prng has been canceled

# and change:
random_array = np.random.RandomState().rand(self.num_discrete_space)

Ya I figured that out from one of the issues. But why not merge this?

@veds12 maybe nobody updates this repository

This helps.

good job