Duelbit becomes on of the most popular and used gambling site now so yeah small capital is enough to make way to win big.
I saw a few gamblers who try multipliers contests and won very big. From free redeem codes, no harm to big awards, that is absolutely amazing experience. I think winners do love those redeem codes and contests on Duelbits.
Apart from the giveaway that gives tens or hundreds of dollars, the promo code is worth between $0.25-$0.50 if you use it to play slots with a minimum bet of $0.1, you can only spin 2-5x if able to get a big win from that amount then how lucky you are, it's hard but still possible.
Besides that, we have to be quick to enter the promo code, if we are a little late, the slot will run out because we know that there are a lot of users who follow duelbits twitter, so we really have to be quick to take it.
Indeed, this is a very small opportunity to win by relying on the promo code $0.5 even though this can be 5x spin with the smallest bet but at least we can try our luck on something small, because we don't know whether luck comes from small capital? This, too, can still happen.