This is the first of a planned series of titles for online casinos that will use the Close Enough feature, where after a spin, Wild or Bonus symbols that are just off the screen can at random count towards the players spin, resulting in a payout.
Another feature of note is the Bonus Guarantee, which ensures that should you enter the free spins round, when playing at maximum bet, you will get a minimum reward of 5x your stake amount. To trigger the free spins, players need,2 Bonus symbols on reel 1, which starts 7 spins, while getting the Bonus symbol on reels 1, 2 and 3 increases the number of free spins to 10.
Along with the high card symbols, Sea of Tranquility has a Moon, Ship, Owl and Girl, all designed to give the game a relaxing feel. The Close Enough feature has proved itself at casinos, with Robin Littleworth, the senior director for game development at Williams Interactive saying ''The Close Enough game engine capitalizes on the near-miss experience, which is common in modern slot game experiences, and awards the player on spins that would have just missed in standard slots.''