This is the Heroes3 Demo, made by 3DO, back in 1999. Available now as a docker image. That you can play from the browser:
Running the game (means you agree with the EULA):
docker run \
-e UID=$(id -u) \
-e GID=$(id -g) \
--rm \
-p 8081:8081 \
bmst/h3demo
Open a browser, point it at http://localhost:8081/
Enjoy!
I am trying to make a point, on what it you can do with application deployments on Docker.