The cheapest graphics card you can play it on is an NVIDIA GeForce 6200. KeysIn1 system requirements state that you will need at least 1 GB of RAM. If possible, make sure your have 2 GB of RAM in order to run KeysIn1 to its full potential. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run KeysIn1. In terms of game file size, you will need at least 100 MB of free disk space available.
KeysIn1 will run on PC system with Windows 7 32 bit and upwards.