Moccori Factory - Okaken no Hihou Kyoufu no NTR Sugoroku ver.1.03 Final + CG (eng) - Adult Sex Game

This is a really short and interesting little game.
The member's of the occult research club gets trapped into a cursed game of sugoroku and the protagonist's girlfriend gets NTR if any of the members lands in the same or an adjacent square as her.
You control yourself and her and can go fowards or backwards in the board to escape the other member and reach the Goal. While having the protagonist near the girl can protect her against the NTR.

This game has new game+ where you can start another run with more items to help you win.
Also, you need to clear the first stage of the game and start a new game+ with that first to unlock the rest of the H scenes and try to get the 'true' ending.