Pseudo 3D, also known as 2.5D, is a technique that creates the illusion of three-dimensionality using 2D graphics. It's used when a system can't handle the calculations needed for true 3D computer graphics, but can still modify 2D graphics.

Software rendering is the ability to render real time 3D polygonal graphics using only a CPU and not a GPU.

A BD gamepad allows enhanced gameplay for 2D games on Blu-ray players.  If a developer wishes to make a BD gamepad, it must be open source to ensure standardization, openness, competition, and full compatibility like the remote control. This article is about a "generic" BD  gamepad for standard BD players, not Xbox and PlayStation controllers.