How the New Vespene Gas Mechanic Works For StarCraft II, with the new Vespene Gas mechanic, players will have 2 gas geysers at their starting position. These geysers will start with X amount of gas (currently 600 and subject to balance) and at any time players can purchase additional gas in their geysers for X minerals (currently 100 and subject to balance). With each purchase of additional gas for your geyser, the geyser increases with X gas (currently 600 and subject to balance) and the geyser shuts down for 45 seconds. When a geyser is depleted, workers will still be able to gather gas at a low rate of 2 per round (subject to balance).
How the New Vespene Gas Mechanic Plays With this new gas mechanic, players have a wider variety of strategies in developing and maintaining their refineries, as well as additional attention needed to make sure they are collecting gas at the most efficient rate. On the production side, players now also have to decide between sticking to Tier 1 units longer, or to play it balanced with one geyser, or even max out on gas to invest heavily on teching and higher tech units. Additional, the relationship between minerals and gas have an added layer of depth since investing in additional gas will actually cost the player minerals as well. How often a player invests in gas will also not necessarily be consistent through the game too and will depend upon what units that player is currently choosing to mass. Scouting too has an added layer of depth as well, as a players gas collecting play style may determine if the player is teching to a higher tier mineral heavy unit (like a Dark Templar) or a higher tech gas heavy unit (like a High Templar).