The most reliable way to own the game is by purchasing a used "PC CD-ROM" from retailers like eBay or other second-hand markets.
For those looking for "abandonware," the game's files are hosted on the Internet Archive for historical preservation.
While the game is delisted from the official Steam store, some Steam Keys may still be available through third-party resellers like G2A , Instant-Gaming , or Driffle .
Note: Using "abandonware" sites is often considered a legal gray area or technically a copyright violation, though such sites are widely used for software that is no longer sold. Finding Nemo - PCGamingWiki PCGW