YOU SAID:
%s (formerly known as %s) joined the game
INTO JAPANESE
%s (以前の %s) がゲームに参加しました
BACK INTO ENGLISH
%s (previously %s) has joined the game
INTO JAPANESE
%s (以前の %s) がゲームに参加しました
BACK INTO ENGLISH
%s (previously %s) has joined the game
Come on, you can do better than that.