Generation V (Black & White 1/2) is the only Generation of Pokemon (so far) to introduce more Pokemon than the original amount found in Red/Blue (151).

Here are the numbers for Each generation:

Red & Blue: 151 Total Pokemon

Gold & Silver: 251 Total Pokemon, 100 New Pokemon added.

Ruby & Sapphire: 386 Total Pokemon, 135 New Pokemon added.

Diamond & Pearl: 493 Total Pokemon, 107 Pokemon added.

Black & White: 649 Total Pokemon, 156 Pokemon added.


X & Y: 709 Total Pokemon, 70 Pokemon Added.

Also, a thing worth noting is that Gen V was the first Generation to not add a pre-evolution/evolution to an existing Pokemon. This trend would continue into Gen VI. 

Here is Gen V's Bulbapedia Page (Check under the "Debut")

(12-21-2014, 01:47 AM)Takahashi2212 Wrote: Also, a thing worth noting is that Gen V was the first Generation to not add a pre-evolution/evolution to an existing Pokemon. This trend would continue into Gen VI.

Gen6 introduced the Mega Evolutions, though. So, technically they had new evolutions for old pokemon.

Mega evolutions are a completely different gameplay mechanic and do not count as different pokemon by any means, so no, they really don't count even on a technicality.

(12-21-2014, 01:47 AM)Takahashi2212 Wrote: Generation V (Black & White 1/2) is the only Generation of Pokemon (so far) to introduce more Pokemon than the original amount found in Red/Blue (151).

Here are the numbers for Each generation:

Red & Blue: 151 Total Pokemon

Gold & Silver: 251 Total Pokemon, 100 New Pokemon added.

Ruby & Sapphire: 386 Total Pokemon, 135 New Pokemon added.

Diamond & Pearl: 493 Total Pokemon, 107 Pokemon added.

Black & White: 649 Total Pokemon, 156 Pokemon added.


X & Y: 709 Total Pokemon, 70 Pokemon Added.

Also, a thing worth noting is that Gen V was the first Generation to not add a pre-evolution/evolution to an existing Pokemon. This trend would continue into Gen VI. 

Here is Gen V's Bulbapedia Page (Check under the "Debut")

Gen VI added 69 Pokemon, though later 72 with the addition of Diancie, Volcanion and Hoopa.