Here is the Minecraft launcher.

Using a regular launcher from Windows or Linux, you can launch Minecraft on the Pandora.
Note that Minecraft is vey demanding, on CPU (and GPU), so don't expect to much Framerate of it.

Still, if you use on overclocked Gigahertz Pandora, and with the use of the OptiFine mod (install it like if your are on PC, or install it on a PC and then copy everything on the Pandora), you can reach playable Framerates, like shown in this nice video from Ingoreis:
http://youtu.be/5uKgy8B7Uhc

Minecraft launcher is featured on Pandoralive here: http://pandoralive.info/?p=3927

Note that the rendering is not 100% perfect yet. Menu background animation is wrong, and there maybe some glitches here and there.

History log
=========
Build 10
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* Updated libs
* Added lwjgl 3 (so compatible minecraft 1.13+)
* embedded a JRE 1.8

Build 06, 07, 08, 09
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* Updated many native libs

Build 05
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* Updated many native libs
* Should be compatible with 1.8.3 minecraft version

Build 04
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* Compatible with latets Firmware SZ 1.62+
* Latest glshim

Build 03
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* Java parameters can be changed (look at appdata/minecraft/home/.params)

Build 02
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* First release version

Build 01
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* Beta releases

A thread is open here: http://boards.openpandora.org/topic/16707-minecraft-launcher/