Someone educate me on how Origin works. Do I need to keep origin installed and running after redeeming to play Sims 2? Or can I uninstall Origin and just run Sims 2 from its installation directory?
You generally have to keep it installed, which is what I suspect the point of this is. How many will uninstall it once installed, if it's even possible to do so and continue playing?
I'd be extremely hesitant about installing Origin, that software is borderline spyware and I don't really trust EA to not be abusive with the data it collects.
A bit more than a week ago a thread
Origin is spying [on] users... again was created. An EA Origin rep claimed they took it seriously, were in contact with the developers and would get back to everybody ASAP. That was more than a week ago. For what it's worth my opinion is that case was likely not particularly relevant, but the rep's behavior was just unusual. I can't imagine why they wouldn't come back to clarify what was what.
Then you have their various EULA terms that completely screw the consumer. They've variably had terms allowing them to sell information they collect about you to marketers (which is the most pure definition of spyware) to allowing them to delete your account and all games you've purchased if your account is ever inactive for longer than 24 months, etc. They tend to change the EULA per region as they get called out on it by users or governments, so you might actually want to read that blob of text before you click install when it comes to Origin. It has a pretty nasty history.