[deltron3030]

>What would be a good system to determine a fair amount between games when a user is paying a fixed amount per month for all games?

It could be made relative to the time that needs to be spent to complete the game, and maybe a different category for open ended and multiplayer games.

Treating all games equal would be bad design, because "game" is often only the most generic category they share, they're digital experiences and should be treated as such.