[cjsawyer]

Don’t forget games played on a 2d plane but rendered with 3d models and cameras! Those are also called 2.5D

[infogulch]

For example Factorio where it uses 2d rendering techniques like sprites which are pregenerated from full 3d models.

[pasquinelli]

the classic example is "pandemonium!", a 3D platformer that only allows you to move on two axes. you move on the surface of an imaginary ribbon winding through the 3D space.