In order for you to play Milk outside a bag of milk outside a bag of milk on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System: Mac OS X 10.13+ (High Sierra) Processor (CPU): 2.4GHz Dual-Core CPU Memory (RAM): 4 GB RAM Graphics Card: Intel Iris Pro 5200 1536 MB, AMD Radeon R9 M370X 2GB, or Metal-capable equivalent Storage: 2 GB available space
Operating System: macOS 10.14 or later Processor (CPU): 1.3 GHz Intel Core M Memory (RAM): 8 GB RAM Graphics Card: Intel HD Graphics 5300 1536MB Storage: 3 GB available space