Metamorfose S is a 2D action-adventure game with RPG elements. This is a game done in metroidvania style, with different levels, equipment, spells, a drop system, and a huge map to explore the further you progress your abilities during the game. In Metamorfose S you take control of Sebastian, an experiment created by Gerry, the scientist. Gerry created many intelligent species, but one specimen manage to escape and then released all the others to join forces against the humans. Sebastian was the only exception, who remained asleep. It is possible to craft your own equipment with materials dropped by enemies. Because he was made only to kill, Sebastian has orders to exterminate all rogue rebel species. These orders were given by Gerry, who had predicted that they could escape.