Games that are reference to and characters appeared in:

Donkey Kong: Donkey Kong 81

Ladders. green platforms and Foreman Spike: Wrecking Crew

Pipe and blue platform: Mario Bros

Wario: Mario Land 2 and Wario Land

Stanley the Bugman: Donkey Kong 3

Main Ground and Mario: Donkey Kong 81, Wrecking Crew, Mario Bros and Super Mario Bros 85.

Hope you guys like what I did for them classic games :>