You play a green slime that can jump and spit slime balls. Defeat the dungeon and reclaim it from the scrap metal ghosts. Clean the dungeon and proceed to the next one.
godot is a very interesting tool. it looks totally indie and with a nice community. Right? Even if there're a lot of bugs and it is not still "complete". i saw different games exported in html5 that doesn't work :( it's not so nice.