Offensive Bunkering | Island Games | Cloaking | Special Abilities | Terran vs Terran | Terran vs Protoss | Terran vs Zerg
Terrans have quite a few tricks that need to be learned for island warfare.
You can also fly Barracks over to the enemy's island. If they know it's an island map, they might be building primarily anti-air defenses, making their town vulnerable to a group of Marines. Fly Barracks over to enemy islands and free islands. Start building groups of Marines and defend until you can get SCVs to the island via Dropship to build Bunkers and Missile Turrets. If you're really lucky, you can fly a Factory over and land it on their island.
When you have mined out an island, lift-off the Command Center and fly it to another island if one is available. Only the Terrans can do this. If you have the resources, you may want to rebuild a Command Center at the old location to keep any ComSat or Nuke Silos active.
A fast way to secure an island is to send a Dropship with 4 Marines, and 4 SCVs. Use one SCV to build a Bunker, 2 SCVs to build Missile Turrets around the Island, while the other SCV builds a Command Center. Place the Marines in the Bunker. If it is attacked, use all the SCVs to repair it as it is being attacked. If you are really pressed for time, use 3 SCVs to build Missile Turrets until the island is covered by them. This is just an example, you can always send more or less units to take the island.
If you have a free Barracks fly it over to the Island, or, if that is not possible, have a SCV build a Barracks on the island if there is room. Start building Bunkers and place the Marines inside. You want to get Marines on the island either by Dropship or by getting a Barracks on the island. Missile Turrets and Bunkers can defend an island against almost everything but Battlecruisers, Guardians, and large collections of Scouts/Carriers. Place Ghosts on the island in Bunkers. Pop out, Lockdown enemy Protoss and Terran flyers then retreat to the safety of the Bunker. Locking down incoming transports is also a great way to aggravate your opponent.
One often successful strategy with Terrans against other Terrans and Protoss is to build up to cloaked Wraiths as fast as possible, then attack the resource gathers. Zerg players can often easily counter this with a Spore Colony and Overlords, but unless they prepare for it, Protoss players are weak to this attack, as are Terrans. When doing this strategy, you have to worry about a land invasion via transport. It's a gamble. You can prepare for a land invasion, then go Wraiths, or just take the chance you won't get invaded and go straight to Wraiths. That strategy pays off if you are not invaded, but if you are, it spells the end for you.
Terran on Terran
Protoss will try for a direct Shuttle landing of Zealots, Reavers, and Templars. If that is not possible, they will mass Scouts, Carriers, or a combination of both. Protoss will use Photon Cannons, possibly Dragoons, Templars' Psionic Storm, and Archons for defenses. Sometimes Protoss players will ignore all defenses, and go for all Scouts. Use this to your advantage. Dropship Marines and Firebats into their towns, with Stim Pack if you see an opportunity. This often works against the Protoss, much more so than against either Terrans or Zerg.
Zerg are the biggest worry on island games. They have many things available to them for island work.
The first concern is mass Mutalisks. Quite often this is the strategy Zerg players use on island games, the race to mass Mutalisks. Bunkers and Marines with Stim Pack should cover this in your main town, but the problem is Mutalisks preventing further islands from being secured. That is where the flying Barracks comes in handy. You can fly a Barracks over and build enough Marines to fight off or delay the Mutalisks if you are very quick and not spotted. You need to secure at least one extra island with Gas for Battlecruisers. Using your initial Minerals and two Gas mines, you should be able to build enough Battlecruisers, if you conserve your Gas, to take out the Zerg.
The next concern is Guardians. Guardians can take out any island defenses from a distance. Battlecruisers are the answer here also. You can get Battlecruisers around the same time that the enemy gets a group of Guardians if you start fairly early, use at least two Starports, and conserve Gas.
Watch out for Scourge, and Scourge bait tactics. Sometimes the enemy will respond to Battlecruisers with swarms of Scourge. Once you have a large group of Battlecruisers, they can easily kill Scourge before they can get close. With only a few Battlecruisers, they can be easily killed. If the enemy uses Ensnare then distracts your Battlecruisers with other targets, Scourge will work.
The Defiler is the Battlecruiser's primary enemy. If you get Plagued, don't stay and fight. Run away, repair, and return. Zerg players can also place Hydralisks under a Dark Swarm. If the Defiler consumes Zerglings to regain energy, they can cast unlimited Plague and Swarms. Battlecruisers cannot break through this kind of defense. The Defilers can also burrow when in danger. In this picture a Defiler is hiding under the Dark Swarm with a group of Hydralisks. The Defiler cast a Plague then a Dark Swarm. The Battlecruisers were forced to run, and repair.
ComSat the Burrowed Defilers to reveal them. Once the enemy switches from Mutalisks/Guardians to Dark Swarm/Hydralisks/Plague, you will have to switch to Siege Tanks. Only Siege Tanks (in Siege Mode) and Firebats can attack groups of Hydralisks under Dark Swarm. If the Terran player continues with a Battlecruiser-only strategy, the Zerg player will easily damage and eventually destroy the Battlecruisers. Use Dropships to get the Siege Tanks to their destination.
The Yamato gun works against units in a Dark Swarm. Yamatoing the Defiler can help if you can target it while in the Dark Swarm.
You can use Science Vessels to Irradiate the Hydralisks under the Swarm. The enemy must decide between leaving the cover of the Swarm and watching his/her troops explode. This is probably the best counter to the Dark Swarm/Hydralisk strategy. A good counter to this for Zerg players is to Burrow the Irradiated units. The Irradiate will still be on the Irradiated unit when Burrowed but the Irradiate will not hit the other Zerg units.
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