Sega Master System / Mark III / Game Gear
This is the cartridge you used to get free with the Sega Light Phaser, and features three drfferent shooting games. Zap targets in a police-style firing range before they spin around and disappear, down clay pigeons and zap small animals in a jungle scenario.
The graphics are colourful and detailed in all three sections and, although the games are fairly basic, they do provide enough entertainment to warrant the expense. Worth a go.