depend of the game for me.
i can go up to 30Gb if the game is full and nice. But i will NEVER go up to 10gb for a ren'py game for sure.
for me, its simple
Ren'py = up to 5-6Gb max if the game is cool and shit tons of content. i dont give a shit if the game is 5Gb of great renders, if it doesnt have content outside of visuals, i dont waste time downloading it.
Unity/Unreal = i can go up to 30Gb, i know theses games didnt have quite alots of options to be compressed or else, soo its acceptable. that didnt change the fact that its still the same for me as Ren'py Game... if the game doesnt have content, i dont take it.
games should be like this to me (approx)
Ren'py = 1Gb = minimum 1 and a half hour gameplay.
Unity/Unreal = 10gb = minimum an hour of gameplay (exception if the game is nice, such as Wildlife for exempl, wich doesnt have lots of content, but is pretty nice to try around all girls and poses, etc..)
we saw some game that are close to 10Gb and have like 10 minutes of gameplay on Unity/Unreal... that's a NOPE for me, a definitive one.