Another very cool project in this space is TRX, which is based on a decompilation of the original Tomb Raider 1 & 2 source code:

https://github.com/LostArtefacts/TRX

Of the various Tomb Raider fan engine projects, this is basically the "vanilla, but modernized and well-maintained" historical archival option.

I contributed the MacOS port to this one, and last year I dabbled a little in porting an older random git snapshot to the web:

https://eikehein.com/stuff/sabatu/ (using a fan level, as to not post the original game content online)

It's a very rough hack, so it's not upstream at the moment.

The TRX team is a wonderful and passionate bunch of people to hang around.