Yes. If you have a Source game like Half-Life 2, HL2 Deathmatch, Counter-Strike Source, Left 4 Dead, Portal, Team Fortress 2, etc. you can play Half-Life 2 mods.
No, Garry's mod only runs through steam and at the current time only supports: Half-Life: Source Half-Life 2 & Episodes 1 & 2. Half-Life 2: Deathmatch & Lost Coast. Day of Defeat: Source. Counter-Strike: Source. Team Fortress 2. Left 4 Dead. Portal.
There are 3 different gametypes available; Deathmatch, Team Deathmatch and Capture the Flag.
No you cannot because Counter Strike 1.6 runs on the original counter strike engine. Every game on garrysmod must run from the Source Engine or any game ran off of HL2. From my memory, These are the requirments. You must have ONE for gmod to work. Garrys Mod*Required Half Life 2 *You need this for basically everything in Garrys mod Half Life 2 Episode One Half Life 2 Episode Two Counter Strike Source Team Fortress 2 Half Life Source Day of Defeat Source
Some games on Steam do. These games include: Day of Defeat: Source Left 4 Dead 2 Team Fortress 2 Half-Life 2 Portal Half-Life 2: Episode 2 Counter-Strike Source Alien Swarm ( Free on Steam) Half-Life 2:Episode 1 Left 4 Dead Half-Life 2: Deathmatch
choose team terrorist
Half-Life, Half-Life: Blueshift, Half-life: Opposing Force, Half-life: High Definition pack (might not classify as a game), Half-Life: Source, Half-Life 2, Half-Life 2: Episode 1, and Half-Life 2: Episode 2. Eight games total not including countless mods created by fans that you can download for free on moddb.com and fileplanet.com. Other games by Valve software include Left 4 Dead, Left 4 Dead 2, Portal, Portal 2, Counter Strike, Counter Strike: Source, Team Fortress, Team Fortress 2, and Alien Swarm. Another Half-Life game would be Half-Life: Decay. You might also be able to count Half-Life Deathmatch and Half-Life 2 Deathmatch.
Shoot the guys on the opposing team.
You or the opposing team must be dead
It depends on what you like. Team Fortress 2 is great for people who like class based team FPS and Counter Strike: Source is better for people who just like FPSs.
Regular Teamdeath Match forces you to be in game chat, while Mercenary Team Deathmatch allows you to be in party chat and play Team Deathmatch at the same time.
you need to make a server and then they come