Official specs from Steam

Risk of Rain 2 system requirements

Minimum and recommended PC specs as listed by the developer on Steam.

Minimum

NoteRequires a 64-bit processor and operating system
OS *Windows 7 or newer, 64-bit
ProcessorIntel Core i3-6100 / AMD FX-8350
Memory4 GB RAM
GraphicsGTX 580 / AMD HD 7870
DirectXVersion 11
NetworkBroadband Internet connection
Storage4 GB available space

Recommended

NoteRequires a 64-bit processor and operating system
OS *Windows 7 or newer, 64-bit
ProcessorIntel Core i5-4670K / AMD Ryzen 5 1500X
Memory4 GB RAM
GraphicsGTX 680 / AMD HD 7970
DirectXVersion 11
NetworkBroadband Internet connection
Storage4 GB available space

FAQ

What graphics card do I need for Risk of Rain 2?

Minimum: GTX 580 / AMD HD 7870. Recommended: GTX 680 / AMD HD 7970.

How much RAM does Risk of Rain 2 need?

Risk of Rain 2 needs 4 GB RAM at minimum, 4 GB RAM recommended.

How big is Risk of Rain 2?

Risk of Rain 2 requires 4 GB available space.

Does Risk of Rain 2 run on Mac or Steam Deck/Linux?

There is no native macOS version. There is no native Linux build (Proton compatibility may vary).