Wikipedia:Articles for deletion/Ninjai
While there is not an enormous wealth of sourcing, the three sources I added (a borderline book reference, a Dutch newspaper article on flash games which begins with 3 paragraphs using Ninjai as an example, and a small article in Black Belt magazine), sum to reach the bar, in my view, of 
— User:Joe, 15:29, 29 June 2011 (UTC)
Stance: keep
Cited policy: WP:GNG (Wikipedia:Notability)