Dark Fortress by KA Gaming presents a grid-based reel setup with feature-driven play. The game emphasizes symbol interactions such as Symbol Swap and includes Random Wilds and Additional Wilds, along with a Free Spins mode that carries a multiplier. Scatter symbols and standard Wilds support feature activation and progression. The visual theme blends Knights and apocalyptic imagery with a green and brown palette, incorporating weapon motifs such as swords and hammers. The structure is described as a multi-reel, multi-row layout with a defined payline framework and an RTP range. The progression relies on feature gating and layered triggers that typically pace the session. Audio-visual design aligns with the dark fortress motif to support pacing without altering base odds.

Mechanics are complemented by concise definitions. Definitions accompany the mechanics in a concise form. RTP denotes the long-run statistical return to players. Scatter symbols are bonus-triggering icons that typically activate Free Spins or other features when appearing in required positions on the reels.

Minimum bet is USD 0.5 and maximum bet is USD 150, with a top win of x19, an RTP of 94%, a 5-3 layout, and 30 paylines.