User blog comment:Dr. Satl, M.D./Petit Computer 3 Update?/@comment-9531161-20130929005244/@comment-15296152-20130929194408

I'm wondering if the 2.5d comment was in reference to displaying 2d images in a 3D projection (1 depth value for all x/y coordinates of an image). Maybe along the lines of the 3D Classics.

The reference to GBA/PSX might have been an indication of how well those handle 2D effects. Rather than looking at 3D games, think of 2D games, like Castlevania SOTN. Even though games can "look" like GBA games now with PTC v2, the limitation of the entire program really prevents these games from having a lot of what existing GBA games can demonstrate of. ex: mode-7, fast blitting of graphics, even audio to an extent. An example of just how limited PTC v2 is can be seen with my own project, MM2 PTC. An NES game in looks, and is barely managing 60fps in average scenarios because of how much processing it requires to do that.