I play a Quake 2 mod that converts it to a ww2 game and it's as ugly as you can expect for a game from before the turn of the century. Ray tracing in this game is short of magic. No assets changed, and it makes it look so good, it's unbelievable.

Of course sometimes we also play this game in software mode which doesn't even colored lighting, just pure rendering on the CPU. So grainy...