Merge Cats Idle Evolution

Merge Cats Idle Evolution is a cozy and satisfying merge & collection game where you combine adorable cats to discover new breeds, complete achievements, and build the ultimate feline collection.
Every merge unlocks new surprises, new cats, and new milestones. Perfect for players who enjoy progression-driven, stress-free gameplay.
Merge your way through multiple stages, evolve your cats step by step, and expand your collection with increasingly rare and valuable breeds.
And for collectors: your evolved cats can be added to your Steam Inventory and traded or sold on the Steam Community Market.

🧩 Classic Merge Progression: Merge two level 1 cats to make level 2, merge two level 2 cats to make level 3, and keep going step by step to unlock higher-level cats.

🐾 Numbered Cat Collection: Each cat has its own level in the progression chain, turning your board into a satisfying puzzle of “can I push it one level higher?”.

🎒 Steam Inventory Integration: The 5th, 10th, 15th, 20th, 25th and 30th cats you unlock can be added to your Steam Inventory as special collectible items.

💸 Sell on Steam Market: These special cats can be listed and sold on the Steam Community Market, letting dedicated players turn their collection into real value.

🏆 Steam Achievements: Unlock achievements as you reach new cat levels, complete merge milestones, and expand your collection.

🎨 Cozy Visual Style: Cute cats, clean UI, and a relaxing atmosphere designed for short sessions that easily turn into “just one more merge”.