The cheapest graphics card you can play it on is an AMD Radeon HD 5450. But, according to the developers the recommended graphics card is an AMD Radeon R5 M330. An Intel Pentium 4 2.00GHz CPU is required at a minimum to run Riftwalker. Whereas, an Intel Core i5-650 is recommended in order to run it. You will need at least 2 GB of free disk space to install Riftwalker. Make sure your have 4 GB of free disk space in order to install Riftwalker. The minimum memory requirement for Riftwalker is 6 GB of RAM installed in your computer. Additionally, the game developers recommend somewhere around 8 GB of RAM in your system.
Riftwalker will run on PC system with Windows 10 and upwards.