id,identifier,generation_id,pokedex_id,order
1,red-blue,1,2,1
2,yellow,1,2,2
3,gold-silver,2,3,3
4,crystal,2,3,4
5,ruby-sapphire,3,4,5
6,emerald,3,4,6
7,firered-leafgreen,3,2,9
8,diamond-pearl,4,5,10
9,platinum,4,6,11
10,heartgold-soulsilver,4,7,12
11,black-white,5,8,13
12,colosseum,3,,7
13,xd,3,,8
14,black-2-white-2,5,9,14
15,x-y,6,12,15