Reset your fleet for permanent Admiral Rank multipliers.
Each rank grants +10% to ALL production.
Requires 1M lifetime credits.
Current Admiral Rank: 0
While you were away, your fleet kept mining.
Idle Space Fleet is a free online idle space game where you build a galactic armada from a single scout ship. Mine asteroids for credits, build alloy refineries, harvest dark matter, and conquer sectors across a procedurally generated galaxy map. Your fleet mines resources automatically, even while you sleep. The observable universe contains an estimated 2 trillion galaxies, each with hundreds of billions of stars — and in Idle Space Fleet, you can conquer them all.
Click to mine asteroids manually. Spend credits on ships that auto-generate resources. Upgrade through five ship classes: Scouts, Miners, Frigates, Cruisers, and Dreadnoughts. Conquer galaxy sectors for permanent production bonuses. When your fleet grows powerful enough, prestige to earn Admiral Ranks that multiply all future earnings.
Yes! Progress auto-saves to your browser. When you return, you'll receive offline earnings based on time away.
Prestige resets your fleet but grants permanent Admiral Rank multipliers that make future runs faster and more powerful.
Start with Scouts for cheap income, transition to Miners for resource bonuses, then build Frigates for sector conquest.
If you enjoyed this, try: Idle Empire · Space Colony · Idle Breakout
Last updated: April 2026 · whatifs.fun