Game and Watch: Mario Bros.

Mario Bros. (1983, MW-56) is a Multi Screen Game & Watch video game that stars Mario and Luigi. The Multi Screen unit is held sideways in a similar fashion to reading a book. The game was released in 1983 by Nintendo, and while named after Mario Bros. in the arcades, the game is not based off of it. Nintendo manufactured 1,000,000 units of the game worldwide. The game's model number is MW-56. The M stands for Mario, though it's unclear what the W stands for. Within the game's box was the game unit, two LR44 batteries, and instruction booklet and battery stickers.

Gameplay
In the game, which takes place after Donkey Kong according to the instruction booklet, Mario and his brother Luigi are working at a bottling plant, loading cases onto a conveyor belt. Once the boxes have reached the uppermost conveyor belt, they'll be dropped onto a truck. After the truck has been filled with boxes, it'll take them away, only to be replaced by another truck. The truck is featured on the left screen.

The player will control both Mario and Luigi. Luigi is on the left screen while Mario is on the right. The boxes will arrive on the right side of the bottom screen, and Mario will be required to go down and put them on the conveyor belt. Luigi, whose on the otherside, will place them on the conveyor belt directly above the one the box was on. When it reaches Mario, he'll do the same thing until it reaches the very top where Luigi will place the box in a truck. Multiple boxes will be on the various conveyor belts at once, which will have the players on their toes trying to make sure not a single box drops. The left control pad moves Luigi while the right one controls Mario.

Scoring
The main goal of the game is to acquire as many points as possible. Each time you place a box on a conveyor belt, you receive one point. After a truck is loaded with eight cases and drives off, you'll get 10 points. The maximum amount of points a player can get is 999 points, after which it'll return back to zero.

The player can only allow three boxes drop before getting a game over. After each box drops, the foreman of the company gets mad at the brother who was supposed to catch it. 

Rarity
Many were made (1,250,000) so quite common. However the hinge breaks more easily because of the 'book' design so less have survived. 

Estimated Value of Working Model (September 2013)
Boxed with instructions: £50-£80

Without Box: £20-£40