Official specs from Steam

Blasphemous system requirements

Minimum and recommended PC specs as listed by the developer on Steam. Native macOS version available. Native Linux build available.

Minimum

Note	Requires a 64-bit processor and operating system
OS *	Windows 7 64-bit
Processor	Intel Core2 Duo E8400 or AMD Phenom II x2 550
Memory	4 GB RAM
Graphics	GeForce GTX 260 or Radeon HD 4850
Storage	4 GB available space

What graphics card do I need for Blasphemous?

Minimum: GeForce GTX 260 or Radeon HD 4850. Recommended: GeForce GTX 650 or Radeon HD 5770.

How much RAM does Blasphemous need?

Blasphemous needs 4 GB RAM at minimum, 4 GB RAM recommended.

How big is Blasphemous?

Blasphemous requires 4 GB available space.

Does Blasphemous run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. A native Linux build is available.

Note	Requires a 64-bit processor and operating system
OS	Windows 10
Processor	Intel Core i5-750 or AMD Phenom II x4 945
Memory	4 GB RAM
Graphics	GeForce GTX 650 or Radeon HD 5770
Storage	4 GB available space