"Ukishima (浮島)" means the "Floating Island" in Japanese. This is mini-skybox which is able to move itself. You can use this Ukishima for workbench or relax space by rezzling tree gurden option from dialog menu .
You can control Ukishima by the following keyboard sequence. And it apperas the dialog menu that configures various parameter via touching Ukishima's body.
[KEY ASSIGNMENT] W or up arrow : forward control S or down arrow : back control shift+A or left arrow : move left control shift+D or right arrow : move right control E or PgUp : up control C or PgDn : down control A or left arrow : rotate left control D or right arrow : rotate right control
[DIALOG MENU] help : show this message note option : toggle tree gurden option rezzling texture : select upper face texture