Cassette 50

Cassette 50 (Galaxy 50 - 50 Excitantes Juegos in Spain) is a video game compilation created by Cascade Games Ltd in 1983. Its 50 games were almost always written in BASIC.
It was advertised a lot in home computer magazines. It came with a free Timex digital calculator watch.
The instructions say "the games will provide many hours of entertainment for all the family at a fraction of the cost of other computer games".
In an interview, Matthew Lewis said he wrote Galaxy Defence in 12 hours at the age of 14. He sent it after seeing a small, anonymous ad in a local newspaper, losing the game's copyright and getting PS10. His father, Ernest, drew the graphics.
Games
Only some games are on all platforms (e.g. Star Trek and Maze Eater). Some games are ports or clones of older or popular games (e.g. Lunar Lander). Some games are made by independent developers. Some games with the same name between platforms are a different game. Some games have problems that make them harder to play.
Acorn Electron / Commodore 64 / Dragon 32 / Oric-1 / Oric Atmos / ZX81
Attacker
Barrel Jump
Black Hole
Boggles
Cannonball Battle
Derby Dash
Do Your Sums
Dynamite
Exchange
Force Field
Galactic Attack
Galactic Dog Fight
Ghosts
Hangman
High Rise
Inferno
Intruder
Ivasive Action
Jet Flight
Jet Mobile
Lunar Landing
Maze Eater
Motorway
Nim
Noughts and Crosses
Old Bones
Orbitter
Overtake
Parachute
Phaser
Planets
Plasma Bolt
Pontoon
Psion Attack
Radar Landing
Rats
Rocket Launch
Sitting Target
Ski Jump
Smash the Windows
Space Mission
Space Search
Space Ship
Star Trek
Submarines
Tanker
The Force
Thin Ice
Tunnel Escape
Universe
Exchange and The Force are not in the Acorn Electron version, but are listed on the inlay. The Dragon 32 version was released again with some updated games. The C64 version of Tunnel Escape is named "Escape or Bust" in-game.
Amstrad CPC
3-D Maze
Attacker
Backgammon
Colony-9
Craps
Creepy Crawley
Cylons
Day at the Races
Dragona Maze
Draughts
Dungeon Adventure
Dynamite
Evasive Action
Exchange
Fantasy Land
Fighter Command
Fireman Rescue
Ghosts
Handicap Golf
Hangman
High Rise
Hopping Herbert
Inferno
Intruder
Jet Flight
Lunar Lander
Maze Eater
Motorway
Nemesis IV
Noughts & Crosses
Planets
Play Your Cards Right
Pontoon Bet
Rally 3000
Rats
Rush Hour Attack
Royal Rescue
Sitting Target
Solit
Space Base
Space Mission
Space Pod Rescue
Space Ship
Star Trek
The Kings Orb
Three Card Brag
Timebomb
Trucking
Whirly
Yamzee
Atari
Attacker
Baby Chase!
Barrel Jump!
Black Hole
Boggles
Cannon Ball Battle
Derby Dash
Defend the Fortress
Do Your Sums
Dynamite
Exchange
Galactic Attack
Ghosts
Hangman
High Rise
Inferno!
Intruder!
Ivasive Action
Jet Fighter
Jetmobile
Lunar Landing
Maze Eater
Motorway
Nim
Noughts and Crosses
Old Bones
Orbitter
Overtake
Parachute
Phaser
Planets
Plasma Bolt
Pontoon
Zion Attack
Rabbit Raid
Radar Lander
Rats
Rocket Launch
Sea Alert
Sitting Target
Ski Jump
Smash the Windows
Space Mission
Space Search
Space Ship
Star Trek
Tanker
The Force
Tunnel Escape
Universe
BBC Micro
Attacker
Barrel Jump
Black Hole
Boggles
Cannon Ball
Derby Dash
Dice Thrower
Dynamite
Exchange
Force Field
Galactic Attack
Galactic Dogfight
Ghosts
Hangman
High Rise
Inferno
Intruder
Ivasive Action
Jet Flight
Jet Mobile
Lunar Landing
Maze Eater
Motorway
Nim
Noughts and Crosses
Old Bones
Orbitter
Overtake
Parachute
Phaser
Planets
Plasma Bolt
Pontoon
Psion Attack
Radar Landing
Rats
Rocket Launch
Sitting Target
Ski Jump
Smash the Windows
Space Mission
Space Search
Space Ship
Star Trek
Submarines
Tanker
The Force
Thin Ice
Tunnel Escape
Universe
The inlay names Dice Thrower "Do Your Sums".
Vic-20
Balloon Dodger
Bank Raid
Bomber
Cupid's Arrow
Derby Dash
Do Your Sums
Dustman Dan
Exchange
Flesh Eaters
Force Field
Galactic Dogfight
Golf
Grid Racer
Hangman
Houses
Intruder
Jet Flight
Jet Mobile
Knight Out
Krazy
Lite Bikes
Lunar Lander
Maze Eater
Meteoroids
Minotaur's Treasure
Mole Hole
Motorway
Nim
Noughts & Crosses
One Armed Bandit
Orbitter
PanAttack
Planetoids
Plasma Bolt
Pontoon
Radar Landing
Sentinel-1
Ski Run
Skull Castle
Soccer
Space Search
Spaceship
Star Falls
Star Trek
Submarines
Super Hi-Low
Super Vaders
Thin Ice
Three Card Brag
Turtle Bridge
ZX Spectrum
Alien #27
Alien Attack #10
Attacker #49
Barrel Jump #48
Basketball #3
Blitz #42
Boggles #9
Bowls #33
Breakout #5
Cargo #28
Cars #22
Cavern #25
Crusher #6
Cypher #46
Dragon's Gold #36
Field #35
Fishing Mission #43
Frogger #4
Galaxy Defence #45
Inferno #38
Jet Mobile #47
Labyrinth #15
Laser #26
Lunar Lander #11
Martian Knock Out #8
Mazer Eater #12
Microtrap #13
Motorway #14
Munch #32
Muncher #1
Mystical Diamonds #44
Nim #39
Orbit #31
Pinball #24
Race Track #17
Raiders #34
Sketch Pad #41
Ski Jump #2
Ski Run #18
Skittles #16
Solar Ship #20
Space Mission #50
Space Search #37
Star Trek #7
Stomper #23
Tanks #19
Ten Pins #21
The Race #29
The Skull #30
Voyager #40
The number with the '#' symbol shows where the game is on the tape.
The booklet names 'Star Trek' 'Startrek' and 'Jet Mobile' 'Jetmobile'.
Reception
The games are very bad. Cassette 50 inspired the yearly Crap Games Competitions (e.g. the comp.sys.sinclair Crap Games Competition and the C64 Crap Game Compo) and a now-defunct website that reviewed bad games.