SUPER ARISA WORLD

[Gaia]

"Super Mario World 2: Yoshi's Island"

So yes.

Also this is such a great project, haha.

Then the Yoshi series spun off from there, ala the origional Donkey Kong splitting into two different series (Mario Bros. and Donkey Kong Country, respectively). Wario soon followed suit and spun off from Super Mario Land 3: Wario Land (not sure of Woods, it could be Toad's only solo adventure, but it features Wario), then Luigi and Peach with their own spinoff games (Leaving Bowser and co. the only ones not to have a spinoff title.. yet).

Makes me wonder that if a certain point in time there will be a spinoff title featuring Sengi.