Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Game | Genre | Platform(s) | Developer(s) |
| --- | --- | --- | --- | --- |
| 2006.0 | Wii Sports | Sports game | Wii | Nintendo EAD |
| 2007.0 | Portal | Puzzle , first-person shooter , science fiction | Xbox 360 , PlayStation 3 , Windows | Valve Corporation |
| 2008.0 | Fallout 3 | RPG | PlayStation 3 , PC , Xbox 360 | Bethesda Game Studios |
| 2009.0 | Dragon Age: Origins | Role-Playing Game | Xbox 360 , PlayStation 3 , Windows , Mac OS X | BioWare , Edge of Reality |
| 2010.0 | Red Dead Redemption | Action Adventure | PlayStation 3 , Xbox 360 | Rockstar Games |
| 2011.0 | Portal 2 | Puzzle | Xbox 360 , PlayStation 3 , PC | Valve Corporation |
Question:
Which game was released in 2011?
Answer:
Portal 2