You can purchase and download the full version of from the following official retailers:
Dual Core 2Ghz (Intel Core i5 or AMD Ryzen 5 recommended for 4K). Memory: 4 GB RAM. download-chasm-the-rift-for-pc-full-version
DirectX 11 compatible (GeForce GTX 950 or Radeon R7 370 for 4K). Storage: 2 GB available space. Legacy and Abandonware You can purchase and download the full version
The remastered version requires significantly more than the original 1997 hardware but remains very accessible for modern PCs: 64-bit Windows 10 / 11. download-chasm-the-rift-for-pc-full-version