Pick and choose any amount of OCs from 1 to 5 and drag them into the bottom section where it says Fighting: After that, click the start button, and then press the green flag and remix. Further instructions in the aptly named Instructions sprite. CURRENTLY SUPPORTED: CONTESTER'S RB HUB, TOPRAK'S RB HUB, KOGAM'S RB HUB, Hikidy specifically, Elice's Tank OCs (no hub sorry), Lukey's RB Hub (just the tanks)