When you land three of Gronk's head anywhere on the reels, you activate the first of them. At full whack, Gronk's Gems is capable of firing off wins as high as 7,x the stake, a sort of mid-level amount for a Hacksaw Gaming slot. Hacksaw Gaming's slot has a strong win potential if you don't mind toying with the. Gronk's Gems offers a unique and immersive gameplay experience set in a mystical world filled with treasures. They have a cave troll! Meet the beefy but friendly, gem-collecting cave troll Gronk! Gronk's Gems is played on a 6×6 grid, has a cascading win. . The game unfolds on a 6×6 grid, utilizing a. No download or registration required. A fitting amount. Gronk's Gems slot has 6 reels, 6 rows and % RTP. Author: Jon Pill | This review was last updated: 27 Jan Play Gronk's Gems slot for free in demo mode, without spending any money. The creative range of bonus features adds additional fun to this magical slot. Click here for AboutSlots complete slot review & information on where to play it! Play the Gronk's Gems slot for free or real money at online casinos. Gronk's Gems is a medium volatile troll slot from Hacksaw. The Gronk's Gems video slot has two free spins modes. Review included. It comes with Epic Gem wins, as well as 2 unique bonus rounds and a x.