Patent ID: 7014525

Claim:
A movable toy set, comprising: a main toy body including an energizing detecting unit having three or more elements, said main toy body having said energizing detecting unit on a bottom surface thereof; and a movable body for moving said movable toy; wherein said movable body selectively moves depending on an energized state of said elements; a water adhesion unit for providing a locus on a play surface, wherein one or more of said elements reaches an energized state when said one or more of said elements is in contact with the locus on the play surface wherein said water adhesion unit includes writing utensils or coating device, and wherein said water adhesion unit comprises a plastic porous material or processed fiber having an open cell as a forward end member; and a sheet member for functioning as the play surface, wherein said sheet member includes a water-discolorable sheet material, and wherein said sheet member further comprises a porous layer having a low refractivity pigment, and wherein aid porous layer is fixed and dispersed in a binder resin on a surface of a support member of said sheet member, and wherein said porous layer has difference in transparency between when said sheet member absorbs liquid and when said sheet member doesn't absorb liquid.