This smallish, white handheld game is called "Brain Games" and is probably around 5 to 8 years old. i've long ago lost the instructions and would like to locate a copy. It has a screen and 2 rows of white buttons below the screen. to the left of the screen is a silver thumb button that says "New Game". On the right is a silver thumb button that says "On-Enter". I can not find an identifying model number. Any help out there? thanks