Since EA closed the "on-request" digital copies in 2018, most players use community-preserved versions found on sites like OldGamesDownload or the Sims 2 subreddit starter guide.
The Sims 2 is a 32-bit game and originally only uses 2GB of RAM. Applying the 4GB patch prevents the "pink flashing" glitch and frequent crashes. The Sims 2 Free Download (ALL DLC’s)
First in the series to introduce aging and complex DNA, where children actually inherit physical traits from their parents. Since EA closed the "on-request" digital copies in
University, Nightlife, Open for Business, Pets, Seasons, Bon Voyage, FreeTime, and Apartment Life. Open for Business
If you are looking to get the full experience (The Ultimate Collection), here is the essential information you need to know about the game and how to get it running on modern systems.