Pokemon The Leola Project Summer is a hack of Pokemon FireRed.
Pokemon Emerald Lucario is a Chinese hack of Pokemon Emerald.
Pokemon Nature is a hack of Pokemon FireRed.
Pokemon Iron Version is a hack of Pokemon Emerald. Actually there are two versions: Pokemon Iron and Pokemon Steel, but they are not so different from each other.
Pokemon Procyon is the direct sequel and the final version of Pokemon Vega – a very famous hack which was created by a Japanese.