Super Mario Bros. [Model NES-SM-EEC]

Super Mario Bros. for NES was released on May 15, 1987 in Europe.

Differences between the European version and the Japanese/US releases of the game:
* In World 8-2, the starting positions of the Green Paratroopas were changed.
* The Japanese and US versions had a bug where if a lot of enemies were on-screen, the Springboard sprite could load into a piece of memory normally used to load powerups or the flag at the end of the level, allowing these to overwrite each other. The European version added a check to prevent this from happening.
* In the European version, the lowest position a Blooper could reach onscreen was lowered by 4 pixels, allowing them to, unlike other versions, hit Super/Fire Mario if he's standing on the ground.
* Originally, in the Japanese and US versions, the branch of an enemy object would add 12 pixels to the player's vertical position. In the European version, it decides whether Mario stomped or got hit depending on the branch of the enemy object.
* Mario's initial downward acceleration at the start of the level is higher.
* Mario's vertical acceleration on springs is now defined.
* In the European version, the vertical difference deciding whether Mario stomped or got hit depends on the enemy.
* Rather than doing an ASL (Arithmetic Shift Left) on the injury timer, the value is set explicitly.
* On water stages, Mario's vertical speed is set to 0 after nullifying.
* Some enemies (more specifically: Piranhas, Bullet Bills, Goombas, Spinies, Bloopers and Cheep Cheeps) have a larger hitbox.
* The second tone of the coin grab sound effect is different.