The Atlantean Gigarise slot game by Yggdrasil is set in the mythical lost city of Atlantis. The game features an underwater theme with a visually pleasing environment filled with schools of fish and majestic pillars. The game’s key feature is the expansive five-reel grid, with ample space above for reel growth. The primary goal is to expand the reels fully, which is crucial in triggering the streak bonus game.

Three random tiers are assigned in the base game, with colored keys revealing the corresponding tiers in the bonus round. Plenty of free spins can be won in the game, along with five possible jackpots. The golden column wild symbol substitutes all regular pay symbols, helping you form winning combinations.

The trident symbol triggers the Rising Reels feature, where each landed trident increases the reel height by one row. This expansion increases the number of winning ways. Landing a trident on a fully expanded row triggers the Streak Bonus Game, which comes in three versions – Bronze, Silver, and Gold.

The bonus game features a new reel set with a highlighted horizontal row. Players start with three lives, and landing a coin on the highlighted row resets the tally. The coins award either cash prizes up to 200x, jackpots, or up to 80 free spins.

Five progressive jackpots are available, and free spins play out right after the streak bonus game. Bonus rounds can also be triggered by landing three, four, or five scatter symbols during base gameplay.

Landing trident symbols raises the reels, and different keys on top of the reels indicate the streak bonus game version they trigger. The higher the bonus game tier, the more likely bigger prizes are won. The bonus round can also be retriggered, with five extra spins awarded on landing just two scatter symbols.

The game’s regular potential is 4,370x, although the low symbol value means plenty of extra win ways are needed for significant wins. Despite this, the game offers plenty of free spins and chances to trigger several streak bonus games. The game’s average RTP is 96%.

Similar games to Atlantean Gigarise include the Pillars of Asgard by NextGen, Oceanus Rising by Playtech, and Riches of Atlantis by Dream Tech.