The Great Giana Sisters

The Great Giana Sisters is a 1987 platform game known for resembling Nintendo's "Super Mario Brothers". The game was developed by Time Warp Productions and published by Rainbow Arts. Due to the game's similarity to Nintendo's "Super Mario Brothers", Nintendo threatened the game's makers with a legal action, and the game was removed from stores.
Players control one of two protagonists Giana or Maria. Players defeat enemies and collect gems and powerups in order to increase their score. The player's objective is to advance through each level.