Example: Opsu! is a version of Osu! and CorsixTH is a version of Theme Hospital, yes, but why isn’t Lix a version of Lemmings and OpenTTD isn’t a version of Transport Tycoon Deluxe?
Problem with current solution besides inconsistency: You can’t search for Opsu! and CorsixTH or OpenRCT2.
Lix and OpenTTD are standalone games, CorsixTH needs the original Theme Hospital game assets to run, that makes CorsixTH an engine, not a game (I don’t know a thing about opsu!)
We’re consistent about this: games get their Lutris page, engines don’t. But the real problem is that we haven’t implemented games aliases or redirects yet which will solve your problem when we do.