Fanatical is going way out of left field with a selection of old school video games owned by Piko Interactive. They've been scooping up whatever abandoned IPs they can find from the 1990s, and most of these games from the island of misfit toys can be purchased in this collection for as little as fifty cents each....
WW2 grand strategy game for Windows, Mac and Linux, free on Steam via Fanatical until 15th August. Looks like you need to sign up for their newsletter and link a steam account that’s had purchases on it to actually get the game.
Colourful 3D platformer for Windows, Mac, and Linux, free on Steam if you link your account on Fanatical (and subscribe to their newsletter) by 20th September