
A roguelike tower defense where every draft permanently mutates your build. Stack modifiers, trigger massive Surge events, and watch your defenses evolve into unstable, compounding systems that fight in ways you didn’t design.
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
Official stores with direct support.
Try this game before buying.
Each wave gives you one irreversible decision.
That decision doesn’t just make your defense stronger, it changes how it behaves over time.
Towers and modifiers interact, interfere, and reshape each other across the run.
Some builds become efficient.
Some become chaotic.
Some collapse into overwhelming synergies you didn’t plan for.
Every run is a different machine formed from the same rules.
Seven Operators give each run a distinct starting identity before your first pick.
Build it. Watch it take shape. Push it until it breaks.
Right now the cheapest offer for Slot Theory is PLN 12.71 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 Slot Theory is PLN 8.89 (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 Slot Theory 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.