The cheapest graphics card you can play it on is an NVIDIA GeForce 510. Cereal Soup 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 Cereal Soup you will need a minimum CPU equivalent to an Intel Core 2 Duo E8400.
Cereal Soup will run on PC system with and upwards.
