: The games are linked via four cross-game portals located at specific points, such as the Crateria Map Room connecting to the Lake Hylia Fortune Teller.
The crossover is possible because both games occupy nearly opposite memory areas in their original ROM structures. This allowed developers to technically "fit" both games onto a single virtual cartridge with minor tweaks to the engine logic to handle the transition between the two. Key Portals super-metroid-game-link
In this "solid paper" of a game, items from both titles are shuffled and scattered across both game worlds. You might find Link's Hookshot in the depths of Norfair or Samus's Morph Ball in a chest in Hyrule. Core Mechanics : The games are linked via four cross-game