Millionaire Rush Megaclusters is an exciting slot game that utilizes Big Time Gaming's Megaclusters engine to create a new and engaging way to play. The game features a branded game show concept that is recognizable to a wide audience, and the Megatrail™ feature ladder provides a breath of fresh air to the classic slot game format. Here are some of the game's features and mechanics:

- Players need to get 5+ matching symbols in a cluster anywhere on the grid to win. The gemstone symbols pay between 0.5 and 1 x your stake for 5 in a cluster, and between 30 to 50 x your stake for 25+ in a cluster.
- The Wild symbol can appear anywhere on the grid and help complete or improve winning clusters.
- The Reactions mechanic triggers on each win and replaces winning symbols with 4 smaller, randomly chosen symbols. Winning clusters are removed and replaced by a new random batch of symbols. The reactions go on as long as you keep winning, and the grid maxes out at 100 positions.
- The Megatrail, which is displayed on the left side of the screen, comes with 12 rungs, each containing a modifier, feature, or blank. The top rung always comes with a random cash prize up to 1,000x in the base game, and reaching rung 7 always awards the bonus round.
- Each consecutive Reactions win takes you one step up the Megatrail. You start again for each new round, and the amount of modifiers, and their respective positions on the Megatrail, vary per round.
- The Megatrail modifiers include Wilds, Multiplier Wilds, Symbol Explosions, Symbol Subdivide, Symbol Upgrade, Symbol to Wild, Mega Wild, Explosions, Symbol Duplication, 50:50, and Max Megaclusters.
- The Bonus Round triggers when you reach the 7th rung on the Megatrail and awards 6 free spins. The top rung prize can now go as high as 2,000x your stake, and you're guaranteed at least 6 random modifiers on the Megatrail per free spin.
- The 55,260x potential is massive, and the RTP of 96.44% provides players with good odds of winning.
- The game is exciting and engaging, and it has the potential to go totally mental when you get into the right flow.

Overall, Millionaire Rush Megaclusters is an impressive slot game that offers a unique and engaging playing experience. The Megatrail, Reactions mechanic, and Bonus Round provide players with plenty of opportunities to win big, and the branded game show concept adds an extra layer of entertainment to the game.