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RTP Grand Express Diamond Class by RubyPlay is a 5-reel, 3-row slot with 50 paylines, a medium volatility profile, and an RTP of 96.88%. The game includes a betting range from 0.5 to 100, with a maximum win of 2,000x. Players can use the demo version to play for free and practice before playing for real money.
The main features centre on the First Class mechanic, where each Wild adds a lit frame on its reel position, and repeated Wilds in the same spot can build a multiplier. Every 10 spins, the First Class feature activates and all framed positions convert into Coins or Wilds. This makes the base game focused on trigger-based progress and repeated symbol landings.
Bonus play comes from Express Respins, which start when 6 or more Coins land, followed by respins that can add more Coins and complete a full row for a jackpot award. The Free Games round uses stacked high-paying symbols, giving the slot an additional bonus layer for players looking for Grand Express Diamond Class slot demo play.
