Read our review of Sonnenspiele Casino, its complaints, support and other factors. Bonus codes offered by Sonnenspiele Casino. Browse best and newest welcome bonuses, free spins, and no deposit bonuses in January on Casino Guru. Do slot machines in tribal casinos pay out less than slots iat Sonnenspiele? Can You Use a Casino Bonus to Play Sonnenspiele Slots?. Log in, choose your account, choose Deposits, then choose Make a DepositCasinos with $ No Deposit Bonus Security Bank. Find out why. SonnenSpiele is an online casino geared towards the German market where players can explore a delightful slot collection. The operator will join the eight businesses and eleven brands already licensed by the Sachsen-Anhalt state administration office, the body. It's good, but there are better options.