Basically,this is an RP based on an what-if idea of an proper Mario & Sonic Crossover,play as much as you want with this:

Crossover Ideas:

-Fighting Tournament(Both Sides are summoned into an inter-dimensional battle) -RPG(Some kind of entity tries to take over both worlds a lá SMRPG or Sonic Chronicles IDK) -Kart Racing Tournament(This is one that i actually don't have an idea NGL) -Normal Mainline Adventure(Typical Crossover Shenanigans or something else entirely) -Crossover with another sports event and/or International event(24 Hours of Le Mans,FIFA World Cup,Another Olympics Adventure,Daytona 500,Any F1 Race that i can think of) -Other(Something like an more comedic adventure or an SMG4/Machinima kind of deal or smthn like that)