Duel creators have the possibility of pressing an "Add Bot" button on their duels in order to play versus official 500 Casino bots.

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Duels are provably fair and no one, not even 500 Casino knows the outcome of the rounds before they happen.

After everyone joins, we randomly pick an unmined EOS block from the very near future and use it to generate a duel result as soon as it's mined.

This guarantees randomness and fairness, even if you're playing against the house.