The classic Unreal series (Unreal from 1998, Unreal Tournament from 1999 and later Unreal Tournament 2003 and Unreal Tournament 2004) were legendary games in their genre. They weren't just genre-defining games, they were just really good games, full stop. IMHO the gameplay and graphics still hold up today, and in retrospect exceeded their competitors (namely Quake 2 and Quake 3 Arena). The original Unreal and UT99 even have a Universal 2/Apple Silicon port. (You still need the data files to play them, which isn't as easy as it should be since you can't buy digital copies of them anymore.)
It all comes back to the perennial discussion about how the gaming industry is killing video game history and preservation for consumers. And this is for a game which you could still get through second-hand physical copies. How much more live service games into which customers have invested hundreds of hours and untold amounts of money? What about the "live service" games that people put years of work into, only to have it tossed in the bin in a matter of weeks?
Oh, and if you missed the references, just do yourself a favour and the read the lyrics instead of torturing yourself with that song again.
