. Prime Casino Bonus Review - Free Spins on Book of Dead · Power Spins Casino Review El Salvador Best Online Casinos: The Ultimate Guide for Salvadoran Players. Prime Casino is the leading online casino site for slot machine games. prime casino login. A list of the latest no deposit bonus codes updated daily from the popular casinos with regular offers for new and existing casino members. Get FREE spins to play & win! The casino features a selection of over games including video-slots, classic and live-dealer casino games from some of the best-known gaming providers such. Show me Bonuses.