Asklemmy

A FPS packed with Myst-like puzzles and atmosphere

Something like Retro Game Challenge, but for Western games. The idea behind Retro Game Challenge is that you play clones of NES games with achievement challenges to "advance" the story, as clones of games in the style of later NES games would come out. It had clones of games like Ninja Gaiden, Galaga, Dragon Quest. It also had game magazines written much like those of the time. The whole thing is a nostalgia trip.

In this case, it probably would have to be PC games. It could even have a cute minigame where you unbox and drop in your first 3D card.

Closest thing I've seen to it has been Arcade Paradise, but the games (along with the rest of the gameplay) weren't as good in that one. They also weren't all retro-inspired, as there's clones of match-3 games and Vampire Survivors.

A business sim that models a country and you can run any business you want, and see if you can build a successful business. I'm talking a sim that models every other business, every city, every street even. The whole economy. Way beyond what's realistic for sim games at present.

More arcade style multiplayer hack and slash RPG stuff in the spirit of gauntlet dark legacy or even something that stretches the concept like Armada 2 and makes it a space-based drop-in drop out multiplayer free-for-all frenzy that's just for fun.

Lord of the Rings Conquest without the stupid magic, without the stupid fire effects and with combat that doesn't suck.

Also Lord of the Rings Total War but you can argue that it sort of exists through mods

An updated version of Ubik.

Planetside 3