iO — cheap CD keys, compare prices
Is it worth buying?
- Reviews are solid. (Steam 81%)
- The price is well above its low (was €0.37) — worth waiting for a drop or setting an alert. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
iO is an abstract, physics-driven platformer built around the interplay of size and speed. By growing larger or shrinking down you crack tricky puzzles, racing to the exit as fast as possible to claim a gold medal. Released in 2014 by Gamious, it blends action and racing sensibilities with an indie feel.
Did you know?
iO is an abstract, physics-driven platformer where you change size and speed to solve puzzles, released by Gamious in 2014.
Best price today
€0.68
all-time low: official €1.24 · keyshop €0.37 (+84%)
On Steam: €1.24 — you save 45% here
The cheapest iO key right now costs €0.68 at Kinguin — the best of 8 compared offers. The lowest price we have recorded for this game: €0.37. The cheapest official store price is €1.24 at Steam.
The average low over the past 5 months was €1.45.
↳ chosen by the region label on the key — not a guarantee
Prices as of
GameSeal Marketplace
Steam Official store
Kinguin Marketplace
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
iO prices by store 7
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €0.68 |
| Gamivo | Marketplace | €0.71 |
| GameSeal | Marketplace | €0.71 |
| Driffle | Marketplace | €0.96 |
| Steam | Official store | €1.24 |
| G2A | Marketplace | €1.37 |
| Instant Gaming | Marketplace | €3.69 |
Lowest — official stores
€1.24
Oct 2026
Lowest — keyshops
€0.37
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €1.24 | €0.61 |
| Sept 2026 | €4.99 | €0.61 |
| Aug 2026 | €4.99 | €0.37 |
| Jul 2026 | €4.99 | €0.68 |
| Jun 2026 | €4.99 | — |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Kinguin, Gamivo, GameSeal, Driffle, Steam, G2A, Instant Gaming
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All-time low so far: €0.37
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows XP+ | Windows XP+ |
| Memory | 2 GB RAM | 2 GB RAM |
| Graphics | DX9 (shader model 2.0) capabilities | DX9 (shader model 2.0) capabilities |
| DirectX | Version 9.0 | Version 9.0 |
| Storage | 250 MB available space | 500 MB available space |
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About this game — FAQ
Can iO be played single-player?
Yes, iO is a single-player game.
Does iO support a controller/gamepad?
Yes, iO has full controller support.
What languages does iO support?
iO is available in: English, French, Italian, German, Spanish - Spain, Dutch, Polish, Portuguese - Portugal.
Does iO use Steam Cloud saves?
Yes, iO uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a iO key?
The cheapest iO key is currently sold by Kinguin for €0.68. That is the best of 8 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.37.
How much does iO cost?
iO currently costs from €0.68 — the cheapest offer across the stores we track. For comparison, the game costs €1.24 on Steam, so buying a key saves you about 45%.
Is Kinguin an official store or a keyshop?
Kinguin is a keyshop (marketplace) where independent sellers list keys, so prices are often lower than in official stores. Every offer on ulov.gg is clearly labeled with its store type.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.