for me all Spapa1.1sh does is open it in the text editor
156 days ago(+2)
- in the folder 'Spapa1.1-1.1-01-PC'
- right click and/or open the folder in terminal.
- type in 'sh Spapa1.1.sh'
- hit enter
Doing so launched the game for me. I only started using Linux this year, so this is the best advice I can give other than running the game in Wine/Proton.
