Defenders of the Realm" is a unique slot game by High 5 Games that brings together a desert city and a viking gods theme with vibrant, psychedelic colors. The game features interesting mechanics and unique symbols, all centered around a colorful Beat Boxes mechanism.

Features:

* The game features a traditional wild symbol, which not only replaces all regular symbols, but is also the symbol with the highest payout. If a player lands five wilds on a payline, they win 100x their stake.

* The slot game also introduces special Horn symbols that color-frame reel positions differently for each reel.

* A key feature of the game is the Beat Box feature. In this feature, any win that includes at least one symbol framed by a Beat Box doubles the payout. All Beat Boxes included in a winning combo vanish before the next spin, unless certain conditions are met.

* If a player lands all four reel positions on a reel framed by a Beat Box, the four positions turn into a wild reel for the next three spins. A Horn symbol can replace Beat Boxes to start this feature too. The wild reel transforms its color from green to yellow to red akin to a traffic light.

* Landing at least three treasure chest scatters on a base game spin triggers the Pick Bonus Game. The bonus game contains multiple tiers that are determined by the number of treasure chests a player lands. Three treasure chests trigger a four-tiered bonus game, four chests trigger the five-tiered game, and five chests trigger the six-tiered game.

* Each tier in the Pick Bonus Game comes with four options for players to select from. Players can level-up or end the game at this stage. Each pick either reveals a cash prize or advances the player to the next tier until the fourth and final pick.

* In the effect of a cross being revealed at the fourth and final pick, the feature ends. If a 2x multiplier is chosen, the winnings are doubled and the player advances to the next tier.

* Activated reels via the Locked Wild Reels feature are highlighted by their respective shimmering color in the background. If all five reels are activated, a bonus round is triggered.

* The bonus round grants 10 free spins. There is no way to get extra spins or retrigger the feature. Players can however benefit from at least one randomly placed wild reel on each spin. Some of the wild reels may also come with a 2x multiplier.

Overall, the "Defenders of the Realm" slot game offers an abundance of features that make for exciting gameplay. The multitude of unique mechanisms and vibrant colors is intended to keep players engaged and entertained.