Purple Diamond

Purple Diamond is a 5x3, 20-line casino slot from 3 Oaks Gaming, released in March 2026. The base game uses classic slot symbols, while the feature set centres on the Hold & Win Bonus and the Expanding Reels mechanic. A purple diamond acts as the Collect symbol, and a blue orb is the Bonus symbol.

The bonus round starts when six Bonus and/or Collect symbols appear. Players receive four spins, with only Bonus and Collect symbols able to land during the feature. Each Collect symbol adds one extra spin and absorbs Bonus symbols below it. As more Collect symbols are gathered, locked rows unlock from the bottom up, opening additional positions for regular Bonus symbols and, later, Super Collect symbols on the top row.

Some Bonus symbols may carry fixed Mini, Minor or Major jackpot values, while the Grand Jackpot can appear as a Super Collect symbol. The game also includes a Diamond Progress Metre and a Lucky Spin trigger. The demo version lets players play for free and practice before playing for real money.