DeLuca is pretty unique, currently. The Red Room however, is pretty much intentionally a Big Brother clone, with one major difference.
Cure My Addiction would also be a Big Brother/The Red Room type of game. I like it a lot more than Big Brother, and it has more content than The Red Room, which I look forward to but have some worries.
You might enjoy Long Live the Princess. The game is a life sim, which is the thing that all of these games have in common, but it does things a little differently, and is based in a fantasy setting.
My personal favorite life sims (not counting Deluca which is one but is very different) currently are Mythic Manor and Harem Hotel. Both of them have interesting characters, incredible fetish content, and plenty of content.
I also sometimes play and enjoy Milfy City, it's got its issues, but it's generally better than older life sims.