Half-Life 2's game-play length depends mainly on whether or not you mind watching conversations in-game or running ahead while NPCs are still delivering their lines. It is suggested that you take in the story.
Without paying attention to story, 4-5 hours
Paying attention to story, 5-10 hours depending on the player and their devotion to Achievements/Trophies/Steamworks Medals (ie. see Lambda Locator achievement)
(Times are roughly estimated as I've played through it both quickly and taking my time)
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.
Only for the half life 2 version of garry's mod.
Gordon Freeman
No it is not. It requires one of the games in the half life 2 series such as TF2 portal or half life 2.
By co-op you mean mulitplayer. Yes. Half-Life 2: Deathmatch is only on PC.
If its linear half-life were 2 hours, then yes.
It will take twice the half-life of the radioactive material for it to decay through two half-lives. If the half-life is 1 hour, it will take 2 hours for the material to decay through 2 half-lives.
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.
you start with half life 2, then you play half life 2 episode 1, then you play half life 2 episode 2, so you are basically playing them in the order they are in at the game select screen (where you choose any of the half life games, portal or tf2)
No, only Half-Life and Half-Life: Decay.
portal 2 for sure although knowing valve it'll take a long time but hopefully after that half life 2 episode 3 and or half life 3
Half Life 2 Half Life 2: Episode 1 Half Life 2: Episode 2 Portal Team Fortress Hope this helps ;)
Buy Half Life: Source Or Buy Garrysmod a Half-Life 2 Modification and get the addon "Half-Life Rennaisance" Link to Half Life Rennaisance: http://www.garrysmod.org/downloads/?a=view&id=57033 Enjoy!
As long as the Half-Life games makes Valve some money, they won't change a winning recipe. So, there will almost for sure be another Half-Life game. yes the first half life was a great success and so where the expansion packs for the PC. The sequel game Half life 2 has also been a huge success and so have ep 1 and ep 2, and soon there will be a ep 3 Half Life 2 episode 3 will be the last in the series, Half Life 2 Ep 1, 2 and 3 are actually Half Life 3, Valve split the game into three so that it wouldn't take them 6 to 10 years to make life Half Life 2 did
The half life is 25 hours so to be safe 2 days?
The half-life of an atom is how long it takes for half of the atom's mass to radioactively decay. This occurs exponentially; therefore, after 2 of the atom's half-lives have passed, 3/4 of the atom will have decay (half during the first half-life, then half of the remaining mass, or one quarter, during the second).
The villain's name in Half Life 2 was Wallace Breen.