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B2W2 postgame
>Get to battle and catch several legendaries (Zekrom/Reshiram, Kyuren, Cresselia, Heatran, Lake Trio, Golem Trio, Regigigas and Latios/as)
>Get to revisit old areas (twist mountain, moor of icirrus, icirrus city, dragonspiral tower, wellspring cave, nacrene city, pinwheel forest, P2 lab, Nuvema town, Striaton city). Which allows you to battle tons of trainers and catch tons of pokémon from the national dex
>Monthly rematches against N, who'll use seasonal themed weather parties leveled 75-77 (80-82 in challenge mode)
>Gym leader rematches where pokémon go up to level 78 (83 in challenge mode). A true challenge
>Get to rebattle powerful trainers like Alder, Cynthia, the Striaton trio and Colress
>New battle facility in the white forest/black city. Get a shiny pseudo as a reward
>Unlock several new tournaments at the PWT which let you battle gym leaders and champions from all regions
>Access to Memory Link, which contributes to the game's plot and lets you battle Cheren and Bianca
LGPE postgame
>Shitty mirror matches
>Catch Mewtwo
>Shitty E4 rematches where the champion's strongest pokémon is level 67
Where did everything go so wrong?