At the edge of the world, "Void Rifts" have suddenly torn open, and countless abyssal beasts surge forth. Conventional weapons are useless against them. The only hope lies in activating the ancient "Stacking Cores" to transform battlefield units into infinitely stackable active constructs. As the last commander of the Stacking Project, you must precisely stack soldiers, turrets, and energy barriers, layer by layer, to build a war tower that pierces the sky and holds back the apocalyptic tide! Every stack is crucial for the survival of civilization!

​Dynamic Stacking, Forging the War Titan​

Units on the battlefield fall in the form of cards. You need to seize the right moment to click and stack identical unit types vertically: stack 3 Infantry to form an "Assault Line", stack 2 Turrets to form a "Heavy Battery". Perfect alignment triggers "Synergistic Resonance", increasing unit range and attack speed; an alignment error exceeding 10% causes structural instability and tower collapse!

​Elemental Affinities & Chain Skills​

Units possess a three-phase elemental relationship: Ice Fire Lightning. Stacking units of different elements can trigger "Elemental Bursts": stacking Ice and Lightning units freezes enemies, while stacking Fire and Lightning units triggers area-of-effect surges. Higher-tier "Bond Stacking" (e.g., 5 Snipers + 1 Radar) can unlock ultimate skills that clear the entire screen!

​Multiplayer Competition & Progression System​

​Real-time Ranked PvP:​​ Compete in 1v1 or 3v3 team battles against players worldwide to test your stacking speed and stability. Victors unlock cosmetic rewards like stealth unit skins or particle effects, and climb the ranks towards the "Towerfall Deity" tier!

​Tactical Module System:​​ Collect modules like the "Structural Stabilizer" to prevent collapses or the "Overdrive Chip" to increase stacking speed. Strategically equipping these can turn the tide of battle!