Yggdrasil Gaming review: Read for the best online casinos featuring this software, and catch up on studio's bonuses, game library, and wagering options. Spearhead Studios, Spike Games, SpinLogic Gaming Jacks or Better, Joker Poker, Keno, Let Them Ride Pari Match - Cash, Pay N Play, Paybay, paybox, PayByPhone. . WorldMatch & Parimatch consolidate their partnership | iGaming Business Jacks Or Better HD.