the equivalent in rumble is the subs and the rants will count as the bits. 200bits is just a 2$ rant and so on and so fourth the tier 2 sub is 2 gifted subs and the tier 3 sub is Equivalent to 3 gifted subs for rumble.
when the giveaway is unlocked type !giveaway in chat for your chance to enter for a free entry.
edit: i just fixed the flyer for rumble !