This is a Las Vegas Poker and Blackjack game put out by Mattel Electronics. The cartridge is in the package along with several instructions. This game has 1979 on the packaging.
Las Vegas Poker & Blackjack is a computerized version of different types of Poker and Blackjack, including 7-Card Stud and 5-Card Draw. The player inputs how much “money” that is available to bet with. There are one and two-player games, and Las Vegas Poker & Blackjack includes a dealer to play against.