NINJA versus NINJA™     •  Ages 8 to Adult • 2 players • Minutes to learn • 15-20 minutes per game • Stock #7007 • Suggested Retail Price $19.99 Available 2008 DETAILED INFORMATION   Credits Original Concept Tushar Gheewala Game Play Design Team Max Osterhaus, Ellen Winter, Al Waller, Mark Alan Osterhaus Illustration and Graphic Design John Kovalic, Cathleen Quinn-Kinney Production Development Tom Strom, Matt Mariani