Blackhawk Rescue Mission 5.
It has insane graphics, lots of lore and content to explore, and is generally a good game. Obviously, it’s developed on Roblox, so it’s bound to have bugs and stuff, but still really amazing.
Phantom Forces had a lot of talk about breaking off Roblox
I think Vesteria could easily be a standalone game.
Entry Point, considering it’s one of the only games I know that has been finished, and has a good story, it probably could break off if the developer wanted to.
Tales of the valley easily. It does not feel like a roblox game. Or even a free game for that matter.
arcane odyssey
Hedgerows II when it’s fully released (and if the characters were modelled to look realistic)
gameplay vid of it
Hellreaver.
That’s roblox? Thought it was some fps game
so literally just BF1 huh, nice
Entry point
It needs more consistent updates though
Not with its scrolling system. That’s a disaster.
adopt me
Once it breaks off no one will probably play it
Ease of access.
Loomian legacy
ok i take my words back god headrows please no
Starscape is just beautiful. If it got a bigger community, then possibly
tales from the valley has no content 
it looks like it does but it just doesnt
That’s because it’s a PvP exploration game, but it’s kind of dead so everyone just either vibes or jumps one another