Which video game entertainment systems have aged the worst?

[sethnintendo]

PS1 mainly for their early 3D. 2D games on PS1 (like Castlevania) look pretty damn good though. The 3D doesn't hold up too well though and I believe N64 3D aged better than PS1.  So in my view Saturn and N64 3D games held up better than most PS1 3D games.