Buy a used PC DVD on eBay. Version 1.0 requires a no-CD crack to run without the disc, but the data is uncompressed and reliable.
Because Activision and Hasbro have not re-released the game (and likely never will due to licensing hell), the fan preservation community has stepped up. A is often the only way for a new generation of fans to experience the fall of their home planet. Buy a used PC DVD on eBay