The visual novel fortissimo//Akkord:Bsusvier was developed by La'cryma, makers of the "Tears" series (True Tears, Soramitsu, Soranana). The game's initial release from 2010 was followed in 2011 by the fan disc fortissimo EXA//Akkord:Bsusvier, and in 2012 by the 18+ extended version fortissimo EXS//Akkord:nachsten Phase, which adds new scenarios for 3 of the original heroines, and also introduces 3 new characters.