
Mario vs Sonic
Sonic: All official games, plus personally demonstrated material from IDW, Sonic Prime, Sonic X, and the 1996 OVA.
Mario: All official games, including RPGs, Paper Mario, spin-offs, and crossovers. Paper Mario’s abilities are included with alternate-continuity distinctions.
Excluded: Olympic titles, Archie Sonic, unsupported cosmology scaling, literal gameplay lives/UI mechanics, and abilities belonging exclusively to other characters.
Rules: Both start in Base with their full legal arsenals and transformations available. Nothing is preactivated, all prerequisites and loadout restrictions apply, and no outside allies actively participate.