Device for balance exercises and balance games using variable restoring forces

A board apparatus for balance exercises and balance games of a user, comprising:

• a base part,
• a support part for the user's body, said support part including a platform which is tiltable relative to the base part including around a longitudinal axis and a transverse axis, and
• a restoring part configured to generate a restoring force that counteracts a tilt of the support part,
• wherein
• the restoring part includes at least four spring elements,
• the spring elements are arranged between the base part and the support part and at a distance from a central vertical axis,
• the distance between the four spring elements can be varied by offsetting at least one of the spring elements inwards and outwards with respect to the central vertical axis, and wherein the at least one of the spring elements can be offset by an adjusting apparatus, the adjusting apparatus being a rotatable adjusting disk having circular eccentric elongated holes.