Pragmatic Play has added to its John Hunter slot series with John Hunter and Galileo’s Secrets.

John Hunter and Galileo's Secrets Pragmatic Play

Mystery symbols can cover the entirety of the 5x3 grid and transform into matching symbols or money symbols.

Six or more money symbols activate the respin feature with three respins. Whenever a new money symbol lands, the number of available respins resets to three. When no respins remain or the entire grid is filled with money symbols, the value of all cash prizes is paid out.

Three book scatters are required to trigger the bonus game with eight free spins initially awarded. Before the feature begins, a random symbol is selected as the mystery symbol.

This determines whether the bonus game begins at the Bronze, Silver, Gold or Super level. A gamble option is also available for the chance to upgrade the mystery symbol.

During free spins, full mystery symbols expand to cover reels and additional scatters are collected in a meter. Every four scatters lead to a bonus game level upgrade and a new mystery symbol is collected at random with two free spins rewarded.

Super level free spins can be triggered via upgrades during the feature or by landing at least one super scatter in a bonus-triggering spin in the base game.

In Super level free spins, the mystery symbol is always the money symbol.

Irina Cornides, chief operating officer at Pragmatic Play, said: “John Hunter is one of Pragmatic Play’s most popular game series. This latest adventure features upgrading mystery symbols that enhance the bonus round, offering wins of up to 5,000x.”