This appears to be a file name for a compressed archive of the , likely split into multiple parts (part 1) for easier downloading.
Open the extracted folder and run the setup.exe or equivalent file. System Requirements (PC): OS: Windows 10 (64-bit) Processor: Intel Core i5-3470 or AMD Ryzen 3 1200 Memory: 8 GB RAM Graphics: NVIDIA GeForce GTX 660 or AMD Radeon HD 7870 sonic-frontiers-digital-deluxe-part1-rar
Collectibles to help progress character stories. Installation Notes: This appears to be a file name for