O2Jam. o2jam is an online rhythm video game developed in South Korea by O2Media.
here were agencies in many countries and regions, but as of 2012 it was only available in South Korea and was published by Nowcom. On 30 May 2012, Nowcom shut down the O2JAM server.

Playing the game is divided between finding a room to play in, selecting a song, and playing a song. There are music-halls, technically servers, on which a user can play in. Some music-halls are named after the muses in Greek mythology.  

here`s  the screen shot of  selecting room

There are 3 servers in the Korean version of O2Jam: Melpomin (Melpomin), Kalliope and Kleo (Clio).

Screen shot of
Selecting servers.

                        

% of the note in the red bar	Grade given.
80+	Cool
50-79	Good
49-	Bad
Miss the red bar	Miss

 COOL

MISS

GOOD


















here the video gameplay
of the o2jam

publish by Ken Michael Steven S. Nohi