Starcraft 1.5: Fusion is a series of totally converted Warcraft III custom maps designed to feel and play exactly the same as Starcraft. The project currently has single player and multiplayer maps designed and based on the original and newest Starcraft games.
Here is the Vespene Geyser Model and Skin created by the Zanmgt team and this Secondary mining structure is the main form of gas production in Starcraft and this resource is needed to tech up to stronger more powerful units in the late game stages.