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Sci-Fi Builder is a sandbox construction sim where you design a space station, build a colony, and control aliens, robots & NPCs. No grids, no limits — just creative freedom in space.
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 ends
Lowest tracked price: $4.99 (Jul 7, 2026) · current best: $9.99.
58% positive reviews all-time.
Right now the cheapest offer for Sci-fi builder is $9.99 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 Sci-fi builder is $4.99 (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 Sci-fi builder 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.
Sci-Fi Builder is a sandbox construction and colony sim where you create your own space station, build rooms, place furniture, and control aliens, robots, and NPCs in a fully interactive sci-fi world.
🛸 What Can You Build?
Design custom sci-fi rooms with full creative freedom (no grid snapping)
Place and move furniture, props, and devices anywhere you want
Paint and recolor your station with endless style options
Control lighting and effects for cinematic space vibes
Create unique interactions between characters, robots, and props
Build societies, alien soap operas, or robot dance battles
🤖 Characters & NPCs
Hundreds of beings: humanoids, aliens, robots, and creatures
Customize outfits, personalities, and behaviors
Directly control NPCs or let AI surprise you with emergent stories
Watch colonies form, relationships spark, and chaos unfold
📦 Creative Toolbox
Space furniture, construction parts, computers, and gadgets
Custom colors for walls, outfits, and alien gear
Wardrobe customization for every character
NPC personality sliders (will your robot be flirty, moody, or feral?)
No object limits — build until your station can’t handle it
🚀 Why You’ll Love It
Sci-Fi Builder is a sandbox of pure creative freedom. Construct space stations, experiment with alien societies, and push sci-fi imagination to the limit. There’s no story, no endgame — just infinite building, roleplay, and weird cosmic fun.
So suit up, space architect — your colony awaits.
