You should just be able to download it on a chromebook like normal. If you're trying to run the game through wine however I don't think it'll work. The game wasn't built with something like that in mind.
Hi there! I'm MadShmupper, a dev over at PortMaster. http://portmaster.games/
I have ported this game to PortMaster, for multiple linux handhelds using multiple operating systems.
As of now, the user must add their own data.win & sound files into the provided port package that PortMaster provides.
On behalf of myself, and the rest of the PortMaster community, I would like to ask if we may have your permission to include the data.win and sound files in the port as a ready to run port.
May we do so, please?
Thank you for any consideration you may give this request.
Best regards, MadShmupper