Double Stacks offers a modern take on classic slot machine aesthetics, featuring traditional fruit, bar, and lucky seven symbols across 5 reels and 10 paylines. The core gameplay revolves around the Double Stacks feature, where the highest paying symbols can appear stacked and count as two. This enhances winning potential in both the base game and during the Free Spins round, which is further boosted by stacked wilds for even greater rewards.