This is how to screw an enemies economy. You load 3-5 transport vehicles(overlord,dropship,shuttle)with small, fast units. Then sneak around to the back of the enemies base. Unload your units and have them ignore enemy combat units and just kill enemy command buildings(hatchery,lair,hive,nexus,command center) and workers(probe,drone,scv). Repeat at all of their bases. Once done the enemy can't gather any more resources, build new buildings, repair units or building or make new workers. Thus their econemy is screwed and their time left in the game is limited. Then just wear them down bit by bit until they run out of their last resources. Then just send in your main attack force( if you havnt built one yet you should build one now) and if their base still stands just send constant small raids until it is destroyed.
Happy Hunting

1:Mind control an enemy Droid,or the other guys.(i can't remember the names)
2:Build a Zerg hatchery,Or (Crap can't remember the names well you know what I am talking about.
3:Build enemy units and colonize(sorry if I spelled wrong)
4:Beat the living crap out of them with there own units(-:

this is how you use a science vessel effectivly:

1. go neat enemy base
2. stay away from detectors
3. use the defensive matrix on 1 or 2 fast moving enemy units
4. than use irradiate on the units
5. the enemy units will run around killing everything near it while it slowly loses health because of the defensive matrix

notes:
1. if facing protoss, you can use teh EMP shockwave to disable their shields so they die faster
2. if facing zerg, use it on the eggs so when they turn into zerglings, you will have two crazy radioactive zerglings killing everybody

When having built a number of seige tanks and have the technolgy to make the tramsform take them up to the enemy base a stop them not to far away from it. Transform them into seige mode and fire away (seige guns are much more powerfull and have better range) always keep one tank not on sege mode to attack enimy units when the come to close and out of range of the siege guns. When part of the base is destroyed get them back to their origal form and move and use the same trick again. (usually the enemy base gets destroyed or needing major repairs.

If you are protoss i have a good attacking idea.
first build lotes of carriers than go to the side of your enemys base and attack there.

Most of the time the computer is not puting defence there.

IF you build a wall of suply depots (in your only entrance) Build two Bunkers behind them.

This will work for zerglings, zand zeolts becuase there attacks are not ranged and the can't get to the bunkers.

This is usless agianst hydras and other units with ranged attacks.

This is a tip when playing...

Zerg: When playing as Zerg build 20 hatcherys (1 of them a lair) and build as many hydralisks as possible.



Terran: When playing as Terran build 10 starports and have each build 2 battle cruisers.

Protoss: When playing as Protoss build 15 stargates and have them each build 1 or 2 carriers...



Note: Have max upgrades on all of above...

Note: Max upgrades are the key to winning...



Your listining to the internet prow of Star Craft power.. If you haven't played online Star Craft you don't know what your missin...

If you want to some fun playing Brood War when you've got a lot of time, try starting with Protoss (preferably against another race like Zerg) and then build up your tech tree until you can build Dark Templars.



Research 'Mind Control' at the Templar Archives and then build as many Dark Templars as possible. Meld them together to create a large force of Dark Archons. Build a whole lot of Shield Batteries in your base so that the Arhons' shields can be revamped, and then when the enemy comes to attack you, employ your Archons' Mind Control ability to take control over the invading units.



If you play against Zerg, you should also try to Mind Control their Overlords. Finally, you should acquire a large enough force to go an' attack the ol' Zergs (or Terrans) with their own units - without having had spent a fortune constructing them!