Nintendo DSi Instrument Tuner is a DSiWare video game released in 2009. In the application you'll play your instrument into the DSi's mic, and it will assist you in staying in tune. There are three different visual designs, one featuring Game & Watchcharacters. Contained within the application is a mode called Tuner Fight where you play the notes that appear on the balloons on your instrument. Tuner Fight is based off of the game Balloon Fight, which appeared on the Nintendo Entertainment System in the eighties.