Xmas was never intended to be a more secular alternative, it was originally created by scribes wanting to save space so they used the first letter of Christ in Greek, “Χριστός”.

Half-life’s Xen levels are particularly infamous for this sort of thing. There’s a reason the Black Mesa remake overhauled it.

Oh this sounds like an amazing hotel, where was it?

Oh huh, that’s an odd rule

No Doom was made open source, same with most of the old Id games.

Rule 3 says not to link, but yeah My Abandonware is great