Half-life: Alyx, Baldur's Gate 3, Elden Ring, ... you get the idea. It's not so much those apps per se, and I'd prefer them to be FLOSS too, rather it's the amazing content and in such rare cases, I'm happy to financially support the creators.
My formulation wasn't clear, I meant to say I'm happy to support creators in general that make quality content, software or not, but I would always prefer to support open source, open hardware, remixable content, etc rather than closed and proprietary alternatives. I listed games as very rare examples where I'm still happy to support them even if I still wish that the software itself would be made open, even if delayed as Quake or Doom for examples have been. Does it make more sense now?