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The goddess of water who summoned you is nowhere to be found. Facing a tidal wave of monsters, you must join forces with other brave people who were summoned like you to repel them! Find the best combination of various strange weapons to survive the waves of attacks!
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.
Right now the cheapest offer for RIOO 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 RIOO 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 RIOO 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.
