Mostbet offers every player a generous casino or sports bonus. Since we are talking about Aviator Mostbet, you will need Casino Welcome Bonus.
To get it, you need to select the appropriate option during registration. This will be offered to each player automatically.
Mostbet welcome bonus gives 125% up to $300 on your first deposit. At the same time, you will also be rewarded with 125 free spins, which can be spent on playing any slot, including the Aviator.
To activate the bonus, you have 7 days during which you need to make a deposit.