Some use real-time 3D graphics, while others use pre-rendered images. You can find popular 3D games in many genres, including action game, fighting game, racing game and puzzle game. We have many free 3D video games to download for PC. While they are often more complex and require more processing power than traditional 2D games, the extra dimension adds an extra level of excitement and engagement. 3D games are games that use three-dimensional graphics to create an immersive gaming experience.