What Hold and Win Actually Does on Our Reels
The Hold and Win mechanic works in a consistent loop: a triggering symbol — usually a coin, gem, or special token — lands on the grid and stays fixed while the remaining reels respin. Each respin that adds a new symbol resets the counter; the round ends when no new symbols land or the grid fills. At 0km, studios like Playson and
Booongo have each built their own coin values, multiplier tiers, and mini-prize pools on top of this core loop, so the payout structure varies meaningfully between titles even though the base mechanic is shared.