Zerg Versus Zerg Basic Strategy

The first attack you should watch out for is the speedling/baneling attack. You need to scout often to make sure our opponent isn't building banelings. If you are not ready for this attack it can cripple your drones and effectively end the game very quickly. I would recommend also getting a few banelings and speedlings to counter this but I would not recommend getting a ton of banelings, just enough to take out his. To counter mutalisks get hydralisks and you shouldn't have any trouble taking him out.
Of course the main attack choice of a Zerg player is to go roaches/hydralisks so most of the games you play vs Zerg will go this way. In a Zerg vs Zerg game I would always grab a few banelings as they are the one unit that can get you the edge in a large battle.
So you can see that going for mutalisks in this type of game is often a death wish for a Zerg player.

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Zerg Roach Rush

Well I would suggest a roach rush but you must know a few things first. This guide will show you how and when to rush with roaches and when you stay away from making roaches.
The roach rush can be very powerful and effective if used right but it can also cost you the game if you use it wrong. Right the bat lets talk about the strengths and weaknesses of the roach unit, the roach does very high damage and is also a armored unit, so what does that mean? It means the roach will do very poorly against a marauder because the marauder does extra damage to armored units. The roach is very strong against a zealot, stalker, or marine. I would normally skip right over zerglings and build a roach warren as soon as the spawning pool is done.

Zerg Guide - Ultralisk Strategy

Ultralisks are the ultimate unit a Zerg player can get in a game. Ultralisks cost 300 minerals and 200 gas so they are not cheap and of course they take forever to tech up to because you must be upgraded to a hive before you can build the ultralisk cavern. Ultralisks only hit ground targets and do very well against groups of small units so naturally they are very good against groups of marines and marauders or zealots and stalkers but all in all they do pretty well against any ground unit the enemy will through at you. So it's a good idea to build them if your opponent doesn't have any air units. Of course on the flip side don't build them if you are being attacked from the air, unless you have a lot of corruptors to handle the air.
I would also recommend getting the armor and attack upgrades for the ultralisk as they are definitely worth spending the minerals and gas on.

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General Terran Build Order

You face a drop in mineral collection when you steal SCV's from your minerals to mine gas, and also when you need SCV's for building. To counter this Starcraft 2 introduces the MULE. Initially I recommend starting with nine SCV's. When you hit 9 on your supply go ahead and build your first supply. Use the same SCV that you built the supply depot with to build your barracks. Always keep an SCV building at your command center. When the barracks finishes use the same SCV to finish blocking your wall by building another supply depot right there. On your 14th SCV you can go ahead with refinery. IF you stop building SCV's at 14 supply then you will have enough minerals to upgrade to orbital command as soon as your barracks finishes. Once your refinery finishes make sure you snag two more SCV's to mine gas. You will want to make a couple marines as well in order to counter a zergling rush or terran reapers. Next you probably want to build another barracks unless your tanking straight to banshees or siege tanks. At this point you should also have 50 Vespene gas to attach a tech lab to your first barracks. Once your orbital command is finished upgrading call down a mule and continue making SCV's. When your tech lab completes you want to produce mauraders and marines (don't forget to add a Fusion Reactor to your other barracks to make two marines at a time). Terran are the most well rounded race in terms of an early game strategy and countering opposing units.

Protoss Vs Terran Basic Strategy

Playing as Protoss against Terran can be a very difficult game as Terran is so unpredictable and hard to scout. Protoss must know what the enemy is doing so they can build the correct counter units but this is a challenge against good Terran players. This guide will show you how to beat a Terran player 1v1.
If the Terran playing is using thors or tanks then build some immortals as they will dominate the thors and tanks without even taking that much damage. The Terran player might make an air attack with vikings and banshees. I wouldn't recommend building air units when playing against Terran because marines do decent damage to air units and that alone will be enough to defend against your void ray attack or even a few carriers.
If you follow this guide and learn the strengths and weaknesses of your units then you should have not trouble beating a good Terran player.

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