City Decode Broadcast 2-7-5 3-2-5 [updated] — Batman Arkham

The riddle is actually famous:

Beyond the Riddler's mission, Arkham City features three legendary "Numbers Stations" that broadcast eerie, coded messages. These are widely considered the game’s most famous secrets, as they foreshadowed the return of in the sequel, Arkham Knight . Frequency (X, Y) The Coded Numbers Decoding Method Secret Message 700.00 / 500.00 9 23 9 12 12 18 5 20 21 18 14 2 1 20 13 1 14 Simple A=1, B=2 substitution "I WILL RETURN BATMAN" 500.00 / 900.00 batman arkham city decode broadcast 2-7-5 3-2-5

Once you successfully lock onto the frequency, the Riddler hacks the channel and delivers his first puzzle. He threatens to execute his hostages one by one if Batman fails to decipher his clues. The Riddle: The riddle is actually famous: Beyond the Riddler's