
a.k.a. ゆっくり観察日記 (Yukkuri Observation Diary)
A Unity-based 3D game created by BlueSnow. The object of the game is to catch, raise, and breed yukkuri of various types.
It was released for Android, PC and HTML5-based browsers but it is now discontinued.
The player can act in one of two modes: Love and Violent. These modes can be switched at any time during the game. (By selecting "Love" at the main menu screen, Violent mode is disabled.)
Actions the player can take in Love mode include feeding, petting, putting yukkuri on a suii, and such. The player can also remove the yukkuri's accessory in this mode; as of version 1.5.3i, doing so causes other yukkuri to change their behavior towards the accessory-less yukkuri, potentially either reforming it or outright killing it.
In Violent mode, the player can abyuse the yukkuri he finds or owns. This includes levels of punishment ranging from flicking the forehead, all the way up to fatal punishments like burning to death.
Points are earned by doing various actions, and by selling yukkuri to the pet store; points can be spent to purchase yukkuri from the pet store, rather than catching them in the wild. Initially, the player has zero points, and must catch and take home each yukkuri they want to raise from the wild.
Uniquely, this game features extensive voice work, with both the player and the various breeds of yukkuri vocalizing differently depending on the current situation and the actions being taken.
As of version 1.5.3L, the original voice engine has been largely replaced with a computer-generated voice system, reminiscent of the old yuudoro-style yukkuri claymation videos.
The game was eventually discontinued and delisted with Yukkuri Diary taking its place.