Big fan of Night Adventure. Essentially REC but completion is really fast and there is no daytime phase like in REC, just the sleep harassment at night.
https://f95zone.to/threads/night-adventure-uncesored-frazunk.162919/
Deep Sleep 2 is a lot like a clicker game, where several actions earn you currency, and making her cum makes you enter sandbox mode where her waking up doesnt lead to a game over, but instead a sorta sandbox mode. A looooot of complaints about the "action regions" being literal pixels in size, so quite frustrating to interact with, but i found it tolerable after just remembering where the spots are. Short length.
https://f95zone.to/threads/deep-sleep-2-final-leam-games.65074/
Inusuku has made two games where you live with your sister, go out in the day to work, increase your stats, and then rape her when she's asleep. Quite lengthy, but both of these games are highly rated and i myself enjoyed them. Loli tho so keep that in mind.
https://f95zone.to/threads/living-with-sister-monochrome-fantasy-v2-0-0-dlc-inusuku.104365/
https://f95zone.to/threads/imouto-life-monochrome-v2-01-inusuku.37378/
Very similar to imouto monochrome is Living with my aunt. Raping your aunt in her sleep is the main way you would get skill points, and after corrupting her you could have sex with her normally. In terms of overall quality, its a lot worse, but is a treat if you're into stealing wives. Shota protag.
https://f95zone.to/threads/living-w...uous-auntie-final-rega-united-kingdom.167599/
This last game isnt really sneaky in a way, but in terms of gameplay its similar? Imperial gatekeeper features a system where after inspecting people crossing the border (very "Papers Please"), touching them and making them cum for the first time makes it so they succumb to your whims however long you keep them in the inspection room. The people can get stressed out and leave the room so you have to touch them in the "right spots" to make them orgasm and stay.
https://f95zone.to/threads/the-imperial-gatekeeper-v1-75-tengsten.33616/
