Play Wai Wai World (Japan) [En by Dylan Robley v1.0] Online
You pick from Konami’s weirdest NES characters—like a mini vampire hunter or a guy in a mech—then swap between them as you brawl through chaotic side-scrolling levels full of sudden boss fights and janky charm. That soundtrack sticks in your head, too.

Wai Wai World was a 1988 release for the Nintendo Entertainment System from Konami, a company known for its experimental crossovers during the NES era. It stands out as a strange but earnest attempt to bring together characters from different Konami franchises into one platforming adventure.
You control a rotating cast of Konami heroes, including Simon Belmont from Castlevania and the Contra soldiers, each with unique abilities like whips or spread guns. The goal is to rescue kidnapped colleagues by navigating side-scrolling stages, fighting off enemies, and defeating screen-filling bosses. Signature mechanics include switching characters on the fly to overcome specific obstacles and collecting power-ups that temporarily boost your firepower. The pacing is hectic, with sudden difficulty spikes and screen-filling chaos that keeps you on your toes. Playing it feels like digging through a box of half-remembered toys, each with their own rules and surprises.
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