The cheapest graphics card you can play it on is an ATI Radeon HD 4850. But, according to the developers the recommended graphics card is an NVIDIA GeForce GTX 660. Death Stair system requirements state that you will need at least 2 GB of RAM. Additionally, the game developers recommend somewhere around 4 GB of RAM in your system. To play Death Stair you will need a minimum CPU equivalent to an Intel Core 2 Duo T7250. However, the developers recommend a CPU greater or equal to an Intel Core 2 Quad Q9000 to play the game. In terms of game file size, you will need at least 2 GB of free disk space available.
Death Stair will run on PC system with Windows 7 or Newer and upwards.