Glad that you asked if this game contained incest. I'm not sure what you mean by similar. This is the only game I know which is 2.5D. But igff you mean other games with incest and not on your list I can point to two others which I like a lot: Summertime Saga (mother, daughter and aunt) and Man of the House (with a simple incest patch). Both are similar in the kind that the MC has an adventure and needs to do find out things...if someone know a similar game like this one with incest sure =D