Portal 2 $9.99 until 3/22/12 via Steam.

All of you who haven't had a chance to play portal 2 yet, here's your chance. Steam has this game for 50% off (9.99) until this Thursday, the 22nd of March.

OS: Windows 7 / Vista / XP
Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
Memory: 1GB XP / 2GB Vista
Hard Disk Space: At least 7.6 GB of Space
Video: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
Audio: DirectX 9.0c compatible

OS: MAC OS X 10.6.7 or higher
Processor: Intel Core Duo Processor (2GHz or better)
Memory: 2GB
Hard Disk Space: At least 7.6 GB of Space
Video: ATI Radeon 2400 or higher / NVIDIA 8600M or higher / Intel HD Graphics 3000