House in Rift - Stuck in a House in a pocket dimension. Paradise Lust - Stuck on an island. Revenge Cumshot or Death - Trapped in a School with your three bullies. (use the fan translation instead of the MTL) The Mist - You're not really trapped as there's an exploration mechanic but the outside world is filled with zombies. The Headmaster - Not really trapped but neither you nor the girls can leave the School's Campus.
Right off the top of my head, I recall Lost In Paradise but the only caveat is that you aren't stuck with a bunch of girls right off the bat. There are only two or three main LIs/girls you get stuck with on the island IIRC..... MC's wife/brother's wife, etc...