44		Echo Night (PlayStation, 1999)
44		Echo Night#2: Nemuri no Shihaisha (PlayStation, 1999)
40		Siren (PlayStation 4, 2016)
40		Home Sweet Home (PlayStation 4, 2018)
40		Siren (PlayStation 3, 2013)
40		Echo Night (PlayStation 3, 2007)
40		Siren (PlayStation 2, 2004)
40		Echo Night#2: Nemuri no Shihaisha (PlayStation 3, 2007)

Notes: Games similar to ...Iru!, Games like ...Iru!, Soft Machine, TAKARA Co., Ltd., PlayStation, Adventure, Survival Horror, 1st-person, Sony PlayStation, PSX, PS1, PS2, PS3, PS4, Game Similarities.