Ever since I started playing the original Sims game, I’ve hated having to keep my cd/dvd in the tray at all times to play the game. Luckily there are some very smart people out there that have always figured out ways to get around this limitation.
First, run the game once and download the latest updates (currently working on version 2.0.113 for the PC).
Next, open this link and download the two listed files to your computer.
Copy the files to the proper folder, typically it will be the following folder:
C:\Program Files\Electronic Arts\The Sims Medieval\Game\Bin
It should ask to replace the existing files, which you will want it to do.
That’s it, now you can pop your DVD out and play the game as much as you wish.
Remember that any future updates you download will most likely break this, so if you choose to update the game in the future you’ll have to install a new No DVD crack. I’ll try to keep this post up to date for future versions.