• Modular stacking: towers can gain layers by building atop existing structures, but growth below the top is temporarily paused during stacking.
• Miracle at 5 layers: when a stack reaches five layers, a Miracle awakens, granting powerful global buffs to all structures on the field.
• Evolution through sacrifice: each structure has three evolution stages. Reaching required levels and consuming an adjacent Key structure unlocks far greater power, progressing from Primitive Form to Enhanced Variant, then Ultimate Form.

• Synergy builds an interconnected web: Data Station (S) generates Data Energy, Defense Tower (D) converts Data Energy to bullets, Booster (B) raises nearby fire rate, and Amplifier (A) exponentially boosts lower layers. More families add further effects.
• Resonance triggers as heroes pass by: different structures emit distinct effects (e.g., S grants Data Energy, D recharges its Data Energy, L provides free draws). Resonance is also a prerequisite for stacking.

• Over 20 heroes, each with unique active and passive abilities to support diverse strategies. Some heroes bring built-in weapons for early skips, while others emphasize economy and defense.
• 24 core building families shape your strategy: Generators (S-Type) produce power and amplify allies; Turrets (D-Type) strike threats and scale with evolution; Logistics (L-Type) trade resources and open portals for endless growth; Amplifiers (A-Type) increase power nearby; plus 20 esoteric types waiting to be discovered.

This is not a game of reflexes or grind; it rewards deliberate planning and elegant construction. Build endless towers within limited space, deepen their connections, and unleash miracles to protect the Core. Your decisions shape the loop, turning a simple defense into a layered symphony of power.