There is https://www.myabandonware.com and http://www.abandonia.com/en/game/. It's been a while since I have used abandonia. But I use myabandonware.com regularly. It is not perfect I suppose, but I get most of my childhood favourites here.

Croc 2 - https://www.myabandonware.com/game/croc-2-cj0. The only 3D colour videogame we had in our school's computer lab.

Claw - https://www.myabandonware.com/game/claw-a39

The thing - https://www.myabandonware.com/game/the-thing-bfm