This is something that five people can do in half a year, provided they already have experience in game-making. If you assign a monthly wage of $3,000 per employee, the development costs amount to $90,000 over six months. 150k copies sold result in revenue of $750k of which Nintendo takes their cut and then there's still plenty of money left. Of course all of these are wild guesses, but the point is that a game like Kamiko can become profitable very quickly.

Flyhigh Works specializes in bringing low budget games with solid mechanics at low prices to Nintendo systems, so they've figured out a strategy that works. The games on their softography are nothing great and mostly mediocre, but the price to value ratio allows them to reach a high enough volume in sales. Kamiko certainly qualifies as a real hit.