Hydorah - Locomalito
http://www.locomalito.com/juegos_hydorah.php
"Hydorah is a game designed for classic shoot em up players, who still love clean designs and challenging adventuresThe whole game takes obvious influence from Gradius, Castlevania or R-Type, but also from other classics treated worse by the time: Turrican, Enforcer, Space Manbow, Hellfire, Guardian, Hydefos, Armalyte and many others..."