Steelseries Rival 500 mouse lets gamers do more with their thumbs
 

Have you ever taken a look at common MOBA and MMO-oriented mice and thought "that cluster of buttons looks like an unmanageable mess?" Well, Steelseries was probably thinking along the same lines of late. The company has tackled that problem with its Rival 500 mouse, which joins ranks with the Rival 700 and Rival 100.

http://techreport.com/news/30643/ste...h-their-thumbs