Outdated technical marvels

[HoloDust]

Elite (C64 - '84) - not the first game that I saw using, what was back in days called, vector graphics (Battlezone was first that I played) to represent 3D, but coding open world space game in just mere kilobytes was marvel on its own - not to mention it was (and still is) brilliant game.

Wolfenstein 3D & Ultima Underworld (PC - '92) - textured 3D real-time game? Say what? For anyone that's been playing 3D games for years with simple color shaded polygons, this was incredible feat.

Comanche: Maximum Overkill (PC - '92) - these days voxel based terrain in flight sims is something that is taken for granted, but back in '92 my mind was blown when I first saw this, being used to very rudimentary polygon based terrains on Amiga and PC.

Quake (PC - '96) - no more sprites to represent objects and characters - everything was 3D...not the first, but probably most popular.