Genaration

A Genaration in pokemon gammes tends to be one seris of games (example is Pokemon Red Blue and Yellow was a genaration

Genarations

The first genaration of games was Red and Green on 2/27/1996 And followed by Blue on 10/15/1996 in japan, red and blue on 9/10/1998 in the US and Yellow on 9/12/1998 in japan and 10/19/1999 in the United States