Japanese outlet Game Watch is reporting that the final retail release of Ninja Gaiden Sigma for the PLAYSTATION 3 will have a very cool feature. Players can earn bonus in-game currency—yellow orbs—simply by playing the demo version of Sigma. The more you play, the more you'll earn.

Team Ninja released a trial version of the game on the PlayStation Store in April, with the retail version expected this month in Japan and North America. Guess I'll have to finally beat Very Hard mode as I want a little walkin' around money from day one. Michael McWhertor

Obtain Currency In The Retail Version of Ninja Gaiden Sigma [Game Watch]