An improved tic tac toe game is herein disclosed. The game pieces include X-pieces or O-pieces that are coupled to hollow cylinder pieces, resulting in large pieces that are shaped and sized to easily grip and operate. In use, these game pieces are placed over pegs the project upwardly from a game board base to play tic tac toe.

Disclosed is a rehabilitation training apparatus that is used when a stroke patient or the like performs rehabilitation training. A rehabilitation training system includes a main device in which a plurality of unit modules are disposed on a plane at a specific interval; a board plate inserted into or coupled to the main device and including a plurality of holes; and a plurality of pegs that are inserted into the holes of the board plate, wherein each of the unit modules includes a sensor module configured to detect insertion of a peg into the hole, and a light source module configured to output light of a specific color, and if the board plate is inserted into the main device, the light source module provides output light to the outside through the hole of the board plate.