Please note: the project doesn't need many environments with little additional research value. This just adds to cognitive load.

Points that make a new environment welcome are as follows:

• It is used in a published paper. Or it is a replica of an environment used in a widely known paper.

• It has research value. Something that cannot be learned effectively with current methods, but it is just a step or two away in terms of improving current methods.

• Code is small and clear.

• It has a solution (zoo policy) that proves the code works.