There are at least 4 variation:
- A: large screen, made in Hong Kong (text is on the box, not on the game) probably in 1983, blue shiny metal faceplate, 3 lane playground, soft rubber buttons, small buttons: power, game a, game b, acl (my box has French text)
- B: small screen, made in Hong Kong (text is on a small sticker on the back of the game) probably in 1983, blue shiny metal faceplate, 3 lane playground, soft rubber buttons, small buttons: power, game a / b, sound on/off
- C: small screen, made in Hong Kong (I guess) probably in 1983, purple shiny metal faceplate, 3 lane playground, soft rubber buttons, small buttons: power, game a / b, sound on/off
- D: small screen, made in Hong Kong (I guess) probably in 1990, blue plastic faceplate, moons in space playground, hard plastic buttons, small buttons: power, sound on/off

Although only the A game has acl button, all games has instructions embroidered in their back side: 'if this product malfunction press acl or try new batteries'