Meow.
Some Windows games built in Ren'py can be played in Android using JoiPlay. You could try and see if it work.
Meow,
Maybe he should get a windows tablet ehehe. I bought a laptop/tablet with 11" year ago only to read visual novels.
I think I am still paying for it in 12 times. Heheh SInce I bought it in .... December.
Good luck with your game there.
Mewing,
Pandrine
P.S.: I just read somewhere that JoiPlay can run GameMaker games if using GMS plugin.