adam4landry 
http://www.epforums.org/forumdisplay.php?147 for what we have
channels are stored as WADS you will need a wad manager to install them from
http://www.epforums.org/forumdisplay.php?8 for requesting ones that we may not have at this moment
At the moment the Wii section is rather new so alot of the games you will need to request
To be honest though you have been able to get every Wii channel not long after the Wii was cracked in the form of a WAD for the games that are just emulated you have been able to inject those with games that are not available from the Wii's shopping channel, though nowerdays homebrew emulators do a better job most the time
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