OneStep Casino has three welcome bonuses- a 100% match up to €500 plus 20 free spins, another 100% match of up to €500 for live casino, and a 100% match of up to €100 for sportsbook. All of them apply to the initial deposit and will be valid for 30 days, which is an excellent bonus duration. However, the wagering requirements for the first 2 options are very high, while the third carries the most player-friendly rollover on the market.