Smiling-X Zero: Classic scary horror game for Android

The player's character is a girl who has come to a hotel to spend Christmas vacation with her parents. When she wakes up, she discovers that her parents have disappeared and tries to find them. In a strange, half-empty hotel, the character is pursued by a man in black.

The gameplay is a first-person action quest. You have to pick up various items, mostly room keys. Some items can be used as weapons or as means to learn something about your parents.