>Gen 1
Full priced DLC
3 times the same game (Red Blue Yellow)
>Gen 2
Full priced DLC
3 times the same game (Gold Silver Crystal)
>Gen 3
Full priced DLC
3 times the same game (Ruby Sapphire Emerald)
>Gen 4
Full priced DLC
3 times the same game (Diamond Pearl Platinum)
>Gen 5
Actual sequel, new story, new content, new locations
2 times 2 different games (Black Black 2 - White White 2)
>Gen 6
2 times the same game (X Y)
>Gen 7
Full priced DLC... twice!
4 times the same game (Sun Moon Ultrasun Ultramoon)
Since Gen 8 we have real DLCs
so 2 times the same game (Sword+DLC Shield+DLC) (Scarlet+DLC Violet+DLC)

I wonder why people say that Gen 5 was the best one...