Ok but the game's name is "The Legend of Zelda," and the full title makes a less good name, whereas SimCity is the whole title in that case and while odd is at least the right length for a name. If you want to go for a game name that just is a name, Hades is available. If you don't mind the kid being named after that particular god as well.
In the grand style of such names as If-Christ-had-not-died-for-thee-thou-hadst-been-damned "Nicolas Barbon" Barebone, yes the part in quotes is the nickname he went by and the rest was his legal name, I think Total Annihilation would make an excellent baby name. Cobalt Core would easily fit, probably not even be taken as all that weird to go by Cobalt for short. Spelunky would make a reasonable name, even comes with the nickname Lunky built in, for that mixed blessing. Slay the Spire would again be in that puritan naming style of old but honestly I think it fucks as a name, and being Slay for short? Yeah that's be cool as hell.