I couldn't find any documentation on this. Seems like an experimental build. Features are hit and miss. Tried a few built-in games, and seems fine. Wanted to try further with my own configuration using doom emacs, etc, but not sure where to put the configuration files. This could be a good alternative to Emacs in Termux for my Samsung DeX setup for basic editing and org-mode, but would be hard to replace the flexibility of Termux beyond that.