HELLO! Your game is SO COOL! I would love it if we could include it in our PortMaster Packages with the game files included? The only problem is that the GameMaker Server.lib files that are in it make it so its dependent on a 3rd party. if you'd like to have your game on PortMasters library, Id love to make that happen for you! All id need is a gamedata that doesn't have any dependencies to achievements or leaderboards and such. If you'd want to send me a data.win, options.ini and so on without nay of that stuff present, my email is unusuaul.paladin@gmail.com !!! I really hope you'll consider it! Have a great day/night!!!!
I'd love to play my own game in my handheld emulator machines, but unfortunately I lost the game project source many years ago.
The only possible way would be decompiling my game, if that's possible. (The old game maker 8.0 games were easy to decompile but this one was made with game maker studio 1)
I'm fine with hacking or decompiling this game in any possible way.
https://github.com/UnderminersTeam/UndertaleModTool/releases/tag/0.7.0.0

So i tried opening my game rolling bird with undertalemodtool and it works. Looks like me from the past did not compiled it in YYC.
I already forgot most of game maker things after all these years, and undertalemodtool's UI is fairly confusing to me, but the all the needed sources are here and functional. the network related functions are at the object called "GMS" and all the scripts in the script folder are related to these network functions alone, as I did not used external scripts for in-game functions. you may need to entirely remove or modify the leaderboard screen to not use this network function to make the game work properly without errors.
Hope this helps, my game is fully hackable with this tool.