Valve · released April 17, 2011
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
Sales
25,100,000
all platforms · as of October 16, 2026
Latest Steam CCU
2,460
Steam daily peak · Oct 16, 2026
Steam all-time peak
14,984
Steam concurrent players · Jun 2017
| Date | List price | Paid | Discount |
|---|---|---|---|
| 10/13/2026 | $9.99 | $9.99 | — |
| 10/05/2026 | $9.99 | $1.99 | −80% |
| 09/11/2026 | $9.99 | $9.99 | — |
| 08/31/2026 | $9.99 | $9.99 | — |
| 08/23/2026 | $9.99 | $9.99 | — |
| 08/15/2026 | $9.99 | $9.99 | — |
| 08/07/2026 | $9.99 | $9.99 | — |
| 07/30/2026 | $9.99 | $9.99 | — |
| 07/22/2026 | $9.99 | $9.99 | — |
| 07/14/2026 | $9.99 | $9.99 | — |
| 07/06/2026 | $9.99 | $1.99 | −80% |
| Country | Paid | Discount |
|---|---|---|
| ArgentinaUSD | $5.69 | — |
| AustraliaAUD | A$14.15 | — |
| AustriaEUR | €9.69 | — |
| BelgiumEUR | €9.69 | — |
| BrazilBRL | R$33.99 | — |
| CanadaCAD | CA$12.49 | — |
| ChileCLP | CLP 6,499 | — |
| ChinaCNY | CN¥35.00 | — |
| ColombiaCOP | COP 24,499 | — |
| Costa RicaCRC | CRC 4,700.00 | — |
| CzechiaCZK | CZK 9.69 | — |
| DenmarkDKK | DKK 9.69 | — |
| FinlandEUR | €9.69 | — |
| FranceEUR | €9.69 | — |
| GermanyEUR | €9.69 | — |
| GreeceEUR | €9.69 | — |
| Hong Kong SAR ChinaHKD | HK$55.00 | — |
| HungaryHUF | HUF 10 | — |
| IndiaINR | ₹509.00 | — |
| IndonesiaIDR | IDR 92,999 | — |
| IrelandEUR | €9.69 | — |
| IsraelILS | ₪36.49 | — |
| ItalyEUR | €9.69 | — |
| JapanJPY | ¥1,400 | — |
| KazakhstanKZT | KZT 2,880.00 | — |
| KuwaitKWD | KWD 2.500 | — |
| LuxembourgEUR | €9.69 | — |
| MalaysiaMYR | MYR 22.99 | — |
| MexicoMXN | MX$129.99 | — |
| NetherlandsEUR | €9.69 | — |
| New ZealandNZD | NZ$15.99 | — |
| NorwayNOK | NOK 105.00 | — |
| PeruPEN | PEN 23.49 | — |
| PhilippinesPHP | ₱329.00 | — |
| PolandPLN | PLN 40.49 | — |
| PortugalEUR | €9.69 | — |
| QatarQAR | QAR 32.49 | — |
| RomaniaRON | RON 9.69 | — |
| RussiaRUB | RUB 445.00 | — |
| Saudi ArabiaSAR | SAR 29.49 | — |
| SingaporeSGD | SGD 10.49 | — |
| SlovakiaEUR | €9.69 | — |
| South AfricaZAR | ZAR 94.99 | — |
| South KoreaKRW | ₩11,000 | — |
| SpainEUR | €9.69 | — |
| SwedenSEK | SEK 9.69 | — |
| SwitzerlandCHF | CHF 9.99 | — |
| TaiwanTWD | NT$198.00 | — |
| ThailandTHB | THB 189.00 | — |
| TürkiyeUSD | $7.19 | — |
| UkraineUAH | UAH 240.00 | — |
| United Arab EmiratesAED | AED 34.49 | — |
| United KingdomGBP | £8.19 | — |
| United StatesUSD | $9.99 | — |
| UruguayUYU | UYU 319.00 | — |
| VietnamVND | ₫140,000 | — |