Weird, I don't see either UW1/2 or Syndicate on Origin.Ultima Underworld 1 & 2 and Syndicate are free on Origin, too. You may be asked for payment information if you claim them from the website, at least according to the r/GameDeals thread (try selecting PayPal, which may let you skip ahead). I just searched for them in the Origin app and added them to my library, and I'm pretty sure I've never entered payment info there.
Or just skip EA/Origin and grab 'em at GOG like a normal person.
Void Bastards and Yooka-Laylee are next week's Epic freebies.
Those 2 games are now available for download...
Bioshock Games discounted up to 80% on Steam. Great series.