Not my game - but one made by Cliff Harris / Positech Games. Here's some info to inspire making better games!
Full story with details:
http://www.gameproducer.net/2007/09/26/kudos-rock-legend-sales-stats/
Game website: http://www.rocklegendgame.com
Earnings per month on sale: approx $5,600
Profit per month based on earnings to date and dev time: approx $3,300
Full story with details:
http://www.gameproducer.net/2007/09/26/kudos-rock-legend-sales-stats/
Game website: http://www.rocklegendgame.com
Earnings per month on sale: approx $5,600
Profit per month based on earnings to date and dev time: approx $3,300