To start the game, you must first install the Jailbreak, GUI Launcher, SkipStone browser.
1.
https://wiki.mobileread.com/wiki/Kind...king#Jailbreak
2.
https://wiki.mobileread.com/wiki/Kind...g#GUI_Launcher
3.
http://www.fabiszewski.net/kindle-browser/
4. Unrar game and copy in folder "extensions".
5. Reboot.
Tested on firmware 5.0.0.