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Build and upgrade towers with unique abilities to stop waves of enemies. With the advanced augment system, every 3 rounds you can boost your defenses and create strategies that fit your playstyle.
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
Lowest tracked price: CA$1.29 (Jul 7, 2026) · current best: CA$1.29.
63% positive reviews all-time.
Right now the cheapest offer for Old School Tower Defense is CA$1.29 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 Old School Tower Defense is CA$1.29 (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 Old School Tower 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.
