(Author here). Hi Greg! I am excited to hear about the new Universe environments. I want as many RL environments as possible for my upcoming project, so I will probably draw from Universe and ALE as well as µniverse.

I took a lot of inspiration from Universe and am grateful for OpenAI's work on RL in general :). I probably wouldn't have started on this project if a company like OpenAI hadn't already decided it was a worthy goal.