Release Date 
Developer Super Marble is a 5-reel, 25-payline slot from 3 Oaks Gaming, released in July 2020. The game uses a fruit slot theme with a Hold & Win bonus mechanic, while the stated RTP is 95.38% and bet options range from 0.25 to 60.
Six purple bonus symbols trigger the Hold & Win bonus, awarding three respins on a fresh board. During the feature, only marble bonus symbols and blank spaces appear, with each collected symbol adding a fixed cash value and the possibility of Mini or Minor jackpot values. Landing a new symbol resets the respin counter to three, extending the round.
A Super Marble bonus symbol can also appear during the feature and collects the values from all current bonus symbols on the reels. If all 15 positions are filled, the Grand Jackpot can reach x1,000 the wager. The demo version allows players to play for free and practice before playing for real money.
