In this chapter, you’ve looked at the game engine of J2ME Polish and how it helps you to port games to MIDP 1.0 platforms. When you use low-level graphics, sound playback, and device control functionalities of the MIDP 2.0 platform, you need to include some manual adjustments, but otherwise J2ME Polish takes care of everything for you. You can adjust the game engine to your needs by specifying various preprocessing variables.