<p>Clover Coins 4x4 Unlimited Fortune packs a genuinely layered bonus structure, with the Lock &amp; Respin's expanding grid mechanic — unlocking from a 3x2 area up to a full 3x5 — giving each feature spin a sense of real progression rather than just watching reels turn. The Unlimited Fortune™ Coin is a clever wrinkle that pauses mid-feature to calculate and assign the highest possible prize value before resuming, which adds a moment of legitimate tension. The top end sits at 5,000x through a full-screen Lock &amp; Respin, and between the Collect Multiplier (up to 20x), four jackpot tiers, Mystery symbols, and the Extra Bet options that juice both entry frequency and starting multipliers, there's enough mechanical variety here to keep sessions interesting well past the first bonus.</p>