This is mod of vanilla PB2 ALE. Modified to work as standalone.
If you want to try it out, you require a webserver. It is recommended to use webserver.nim that is already included in this repository if you also want to try out map testing feature.
Get nim compiler then write nim c webserver.exe, wait for while.
Then you can execute webserver.exe, you can also set environment variable named EXPB2 to expanded pb2 client directory if you want to try out testing feature.