I came across Spin Alto casino just last week. I don't always play with bonuses, but I can't say no to a good offer with reasonable wagering requirements. I signed up and claimed the welcome bonus and experienced no issues during this process. Their game selection didn't disappoint - they had all the major game studios and the games I like. Unfortunately though, I didn't have much luck in my session and my balance reached 0 quite quickly. That said, I had no issues at all and I will be coming back because of their promotions and game offering.
