Idle Defense - Cosmic TD

Idle Defense - Cosmic TD Game Description

Defend your base against endless waves of alien invaders in this idle tower defense game. Place and upgrade turrets, unlock new weapons and keep your defenses growing even while you're away. Face nine enemy types and five named bosses, take on Rift events, and prestige to start stronger with permanent bonuses. Short sessions or long runs, your base keeps getting stronger.

How to play Idle Defense - Cosmic TD?

Your turrets fire automatically. Earn credits by defeating enemies and spend them on upgrades between waves. Tap the reward buttons for temporary boosts. Beat bosses to move forward, and when progress slows down, prestige to restart with permanent bonuses. Your progress is saved automatically.

Platform

Browser Desktop , Mobile and Tablet

Release date

November 5, 2026

Last update

November 5, 2026

FAQs

What are the best Strategy games?

• Battle for the Galaxy
• Territorial.io
• 1942 Pacific Front
• 1941 Frozen Front
• Merge Battle Tactics

What are the best online games?

• Cut the Rope 2
• Solitaire Blue
• Minesweeper
• 2048
• Mahjong
• Shell Shockers
• Smash Karts
• Dino Game
• Flappy Bird