Minecraft uses a lot of native libraries via JNI[1]. Specificly the openGL rendering has been pushed out to native code due to both Java speed issues, and suppo

Minecraft uses a lot of native libraries via JNI[1]. Specificly the openGL rendering has been pushed out to native code due to both Java speed issues, and support for opengl features beyond OGL 1.1. As essentially all skycraft entails is a rendering of a pregenerated map with some minor UI and deformability, the parts of Minecraft this compares to are infact largely native. [1]http://en.wikipedia.org/wiki/Java_Native_Interface http://en.wikipedia.org/wiki/Java_Native_Interface