Tower defense games have evolved far beyond the classic "build towers to stop monsters" formula, introducing innovative gameplay mechanics that keep players engaged. Traditional tower defense revolves around the "maze building" concept: on a blank map, players strategically place towers to create formations that guide enemies along predetermined paths, extending their travel distance while towers deal continuous damage. However, the "longest path" isn't the only strategy - each map features unique mechanics, such as flying units that bypass ground formations, forcing players to consider multi-dimensional defense strategies. CAT RUSH: TOWER DEFENSE builds upon classic tower defense gameplay while introducing innovative multi-element combination mechanics. When you defeat enemies, you'll collect diverse game resources, all presented as in-game currency for easy collection and management. Our game revolutionizes the genre by transforming traditional towers into distinctive character heroes, each with unique personalities and specialized roles. These characters don't fight alone - they support strategic team combinations where different heroes create synergy effects, forming diverse tactical systems. Additionally, identical characters can be merged to upgrade, unlocking stronger abilities and attributes that significantly boost your defensive efficiency, delivering both strategic depth and satisfying gameplay as you repel enemy invasions.