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A strategic and action-packed base survival game where you mine crystals, build units, and defend your base against waves of UFOs. Defeat enemies, gather resources, and unlock new planets to expand your defenses. Are you ready to conquer the galaxy?
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Try this game before buying.
Welcome to the unforgiving frontiers of deep space!
In Space base Defense, you're the commander of a stranded lander under constant siege by alien creatures. Your mission is simple: gather, build, and survive.
A lighthearted and tactical tower defense game where you gather resources, create and upgrade different types of units to fend off endless waves of enemies. Collect, create, and position strategically to survive each attack in colorful alien environments full of surprises.
Harvest glowing blue gems from the planet's crust to construct an army of mining bots, defensive- and combat units. Fend off endless waves of alien enemies who drop green gems upon defeat — your key to unlocking new planets and tougher challenges.
Every planet offers new layouts, fresh enemies, and the chance to perfect your strategy. Will your base become a shining beacon of survival or fall beneath the alien swarm?
Features:
Strategic Base Defense — Protect your lander at all costs against incoming alien waves.
Mine and Build — Collect blue gems to expand your defense and create new units.
Plan Your Growth — Balance resource gathering with firepower to outlast the enemy.
Unlock New Worlds — Defeat alien invaders, collect green gems, and unlock new planets to explore and conquer.
Simple to Learn, Hard to Master — Easy to pick up, but challenging to survive!
Right now the cheapest offer for Space Base Defense is CA$3.89 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Space Base Defense is CA$1.94 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Space Base Defense drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
