There are many games on ROBLOX, however, game developers aren’t able to use offline games. I believe if we added some sort of locked game feature where they can download a ROBLOX game to play without an internet connection but not be able to edit the game this would make applications possible on ROBLOX such as mobile applications and more. Minigames could be playable on your tablet or phone and puzzle games could be played that have been created by ROBLOX developers. This would allow for purchased games and other similar ideas that could branch off of this.
I’m not sure how you would make it so they cannot edit the game, that would be up to ROBLOX to work out if they consider this feature.