Welcome to Merge Mech: Idle Robot Battle – the ultimate idle merge game! Build and evolve your powerful mech legion, merge identical robots to unlock deadlier war machines, and fight off waves of alien invaders and mutant beasts. Deploy your tactics, enjoy automatic battles, and collect rewards even when you’re offline. Save humanity with your invincible steel legion! How to Play Drag and merge two identical robots to evolve into a stronger, rarer mech with unique weapons and skills. Keep merging to unlock legendary war machines. Strategically arrange your mech squad on the battlefield to maximize firepower and counter different enemy waves. All battles run automatically. Defeat alien swarms and giant bosses to earn coins and unlock more advanced mech blueprints. Collect idle rewards even when the game is closed. Come back anytime to upgrade your army and keep progressing. Game Features Satisfying Merge Evolution Intuitive drag-and-merge mechanics with smooth evolution animatio...