Abstract In West Africa, the presalt is an established play since the 1950s. Even so, only recently has the expectations for a potential extension of the Brazilian Santos/ Campos basins proven presalt carbonate play boosted spectacular interest in the Kwanza basin (south Angola). The “Sag carbonate Play” has gained most of the attention and promises to be the real “sweet spot” of future presalt exploration, at least in Angola. Moreover, new technologies and ideas allow us to reexamine the great complexity of the presalt play on the historically explored trend (onshore and in conventional waters) along the whole West African margin.