N°1 in French-speaking Switzerland. An overview of the Gamrfirst promo code offers How to claim them? What to expect? How to qualify? What other offers are up for grabs? An overview of the Gamrfirst promo code offers How to claim them? What to expect? How to qualify? What other offers are up for grabs? GAMRFIRST Online-Casino by Casino Barrière Montreux. New players who join the new Gamrfirst casino can receive a first deposit bonus of % BONUS UP TO CHF + CASH SPINS when. Bonus of CHF 1' - Play slots, table games, live casino safely!.