United States (ESRB): M for blood, gore and intense violence
United Kingdom (BBFC): 15 for strong violence and moderate horror
Europe (PEGI): 16+ for realistic looking violence
Australia (OFLC): MA15+ for strong violence
New Zealand (OFLC): R16+ could not find reason (probably because of violence)
Hope this helps! :)
If you mean age rating, it is rated M for mature by ESRB for Blood, Violence, and Drug Content (Which in many M games, such as this one, none our found).
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.
Mature+ Blood and gore 17 or older.
Only for the half life 2 version of garry's mod.
Gordon Freeman
There may not be much swearing, but it's extremely bloody when you get to ravenholm. The zommbies may give kids nightmares and it is moderately violent.
All the Half-Life games are rated M.
Half-Life 2 Episode Two - 2007 VG is rated/received certificates of: USA:M
Half-Life 2 Episode One - 2006 VG is rated/received certificates of: Australia:MA Portugal:M/16 USA:M
La Femme Nikita - 1997 Half Life 2-7 is rated/received certificates of: Argentina:13
no You idiot, it is rated M. And it is rated M because there is a extremely large amount of blood, there is a lot of violence, and there are some pretty scary Zombies O_O
Half Life - 1986 is rated/received certificates of: Australia:G Sweden:7
Nairobi Half Life - 2012 is rated/received certificates of: Switzerland:16
My Whole Half Life - 2014 is rated/received certificates of: Germany:6
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.
Mature+ Blood and gore 17 or older.
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.