House of the Dead with keyboards instead of light guns! This is a fun typing game to play with your shiny new keyboard, with ridiculous dialogue and terrible acting (I love campy) and it's the cheapest I've ever seen it:
Game Stop linkAlso on sale for $6.79 @ Green Man Gaming (I'm not sure if they are US only or worldwide) -
GMG LinkThe DLC is also on sale for about $1/ea:
DLC linkSpecifications:
MinimumConnectivity: Requires the Steam client to install and play
Hard Drive Space: 10 GB Available Space
Operating System: Windows 7 / 8
Processor: 2.0 GHz Dual Core processor
RAM: 2 GB
Video Card: 512 MB Compatible with DirectX 10.1 and Shader Model 4.1 (equivalent to ATI Radeon HD 6450, NVIDIA GeForce GT 220 or Intel Integrated Graphics HD 3000)