20 em 1

From Sega Retro


20em1 title.png

20 em 1
System(s): Sega Master System
Publisher: Tec Toy
Game total: 20
Genre: Compilation

Number of players: 1
Official in-game languages:
  • Portugu√™s
  • Release Date RRP Code
    Sega Master System

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    20 em 1 (translated as 20 in 1) is a collection of 20 original games developed and published by Brazilian company Tec Toy for the Sega Master System.

    The cartridge was only sold bundled with a certain version of Tec Toy's Master System III Compact, and as such had no box of its own and was never sold outside Brazil. The games included in the collection were made for children and are relatively basic, ranging from driving to platformers to shoot-'em-ups. None of the terrible games have been named, being only identified by numbers.


    All of the games give the player 60 seconds to reach a certain score, which varies from game to game. In most of the games the only buttons available are Left and Right, which move the character to the respective direction, but some games allow the player to perform an action, such as jumping or shooting, with button 1 or button 2.

    20em1 SMS BR Game01.png

    Game 01
    The player controls a construction worker who has to catch tools, which fall vertically from the top of the screen, using a bucket.

    20em1 SMS BR Game02.png

    Game 02
    The player controls a hungry lunar creature that needs to collect pieces of cake and burgers while avoiding explosive obstacles, which will decrease the player's score if touched. In this game the screen scrolls both to the right and to the left, and every time it is done the items and obstacles on the floor change. The player can also use the Up and Down buttons, while moving horizontally.

    20em1 SMS BR Game03.png

    Game 03
    The player controls a skateboarder boy who earns points by just moving forward and loses points when they touch the obstacles. The Left button is used for braking, and the Up and Down buttons can only be used if the character is moving forward.

    20em1 SMS BR Game04.png

    Game 04
    The player controls an odd creature and does not face any enemies or obstacles, and the only buttons available are Right and 1, which is used to jump. The screen scrolls, very slowly, to the right and the player only needs to move fast enough to finish the game.

    20em1 SMS BR Game05.png

    Game 05
    The player controls a little mouse who can move horizontally and jump with button 1. The goal is to catch pieces of cheese which fall diagonally from the top.

    20em1 SMS BR Game06.png

    Game 06
    This game is very similar to Game 01, except the player controls a diver who must catch coins, which fall horizontally from the top. Another difference is the presence of a shark that shows up occasionally and decreases the player's score if touched.

    20em1 SMS BR Game07.png

    Game 07
    The player controls a biker from a top-down perspective and must simply go through the way avoiding the (very few) obstacles. Down button is used to accelerate, and the player can go to the Left and to the Right while in movement.

    20em1 SMS BR Game08.png

    Game 08
    The player drives a yellow car that can be moved to any direction around the screen. Points are earned by just avoiding the other cars which appear on the screen trying to hit the player's car.

    20em1 SMS BR Game09.png

    Game 09
    The player controls a Brazilian native boy, guiding a canoe on a river. The goal is to dodge the rocks, alligators and flying arrows on the way.

    20em1 SMS BR Game10.png

    Game 10
    The player controls a helicopter from a top-down perspective, like in Game 07, and earns points by shooting a rival helicopter with button 1. When either helicopters get hit they become invulnerable and cannot move for a few seconds. This game allows the player to move in any direction, diagonals inclusive.

    20em1 SMS BR Game11.png

    Game 11
    The player controls a frog on the surface of a lake, with three lilypads on which they can jump. The goal is to catch bugs which fall vertically from the top of the screen, and to do so the player must move to the Left and to the Right, and press 1 to stick the frog's tongue out. Points are lost if a bug touches the frog.

    20em1 SMS BR Game12.png

    Game 12
    The player controls a spaceship that can move in any direction around the screen. 1 is used to shoot enemy spaceships and other strange objects, and the player loses points when hit.

    20em1 SMS BR Game13.png

    Game 13
    The player controls an airplane that can accelerate with Right button, decelerate with Left button and shoot with button 1. The goal is to shoot hot air balloons which appear vertically from the bottom of the screen, and dodge other airplanes which, occasionally, come from the left.

    20em1 SMS BR Game14.png

    Game 14
    This game is basically the same as Game 03, but the player is a roller skater instead of a skateboarder, and the scenario is slightly different.

    20em1 SMS BR Game15.png

    Game 15
    The player controls a baker and must put two cookies into a furnace. Button 1 is used to throw a cookie, starting a Pong-like game in which the cookie bounces off the right side and comes back at the player, and they can hit it back with a pan.

    20em1 SMS BR Game16.png

    Game 16
    The player controls an odd superhero-looking insecticide sprayer who can jump to the Left and to the Right. They must the kill insects which come from the top of the screen, using button 1 to spray on them.

    20em1 SMS BR Game17.png

    Game 17
    The player controls a little guy who can move to the Right, jump with the Up button and attack the enemies with button 1. The enemies come running at the player but cannot jump, being no challenge at all.

    20em1 SMS BR Game18.png

    Game 18
    The player controls a snow skier on a very short course. To control the skier the player must hold the Down button and press the Left and Right buttons.

    20em1 SMS BR Game19.png

    Game 19
    Similar to Game 08, the player controls a police car and must dodge red cars which try to hit them. The player is allowed to move in any direction around the screen.

    20em1 SMS BR Game20.png

    Game 20
    Another Pong-like game, but in a tennis scenario. 1 releases a tennis ball that bounces off the wall on the right side, coming back at the player who must hit it back with their tennis racket.

    Magazine articles

    Main article: 20 em 1/Magazine articles.


    Physical scans

    Master System, BR

    20Em1 BR cart.jpg

    Technical information

    ROM dump status

    System Hash Size Build Date Source Comments
    Sega Master System
    CRC32 f0f35c22
    MD5 91a9dcd4f59c29db72c931be2fe60b51
    SHA-1 2012763dc08dedc68af8538698bd66618212785d
    256kB Cartridge (BR)