[DJEarthQuake]

Gametitle.
Appears when entering Half-life single-player levels. Multiplayer: visible exclusively to the first person who joins.
On Hammer this only can be set in worldspawn - Brush Entity.

Spoiler

worldspawn - Brush Entity
A special entity that controls several global properties. Created automatically, and can be found in Hammer under Map > Map Properties.
Attributes

• Map Description/Title (message) - Used to show the map's title/description in the old WON interface.
• Environment Map (skyname) - Lets you choose what sky image you want. See: Sky List
• CD track to play (sounds) - 0 or 1 = None. CD track to play when the level begins. See also: trigger_cdaudio and target_cdaudio
• Default light level (light)
• Default Wave Height (WaveHeight) - Set the default wave height here (can be overridden by the properties in func_water).
• Max viewable distance (MaxRange) - Maximum distance the player can see in Hammer grid units; same as sv_zmax.
• Chapter title message (chaptertitle) - Text displayed when entering the level. See also: game_text and env_message
• Level Fade-in (startdark) - 0 = No, 1 = Yes. If Yes, then the level will start black and fade into normal light. See also: env_fade
• Display game title (gametitle) - 0 = No, 1 = Yes. If Yes, then "Half-Life" will be displayed after the map loads.
• New Level Unit (newunit) - 0 = No, 1 = Yes. If Yes, all previous global triggers will be removed. See also: env_global.
• Map team List (mapteams) - This will be copied into the mp_teamlist while your map is running if the server allows maps to override the team list.
• Default Team (defaultteam) - 0 = Fewest Players, 1 = First Team (team index 0). See also: game_player_team, game_team_set and game_team_master

Notes
Every common brush (that is not a brush-entity) is part of the whole "worldspawn".
chaptertitle is only shown in single-player maps.

How to make Gametitle appear to everybody using Amxx in Half-Life.

emessage_begin(MSG_BROADCAST,get_user_msgid("GameTitle"),{0,0,0},0)
ewrite_byte(1)
emessage_end()

GAMETITLE shows in titles.txt

PHP Code:

// Game title
// This is a placeholder to hold the effects controls for the "Half-Life" title
$position -1 -1
// Only effect 0 is supported for game title
$effect 0
// This is the final color
$color 180 180 180
// Not used color2
$color2 0 0 0
// This is the time it takes to fade in the title
$fadein 1.0
// How long to hold the message on the screen (after it scans out)
$holdtime 3.0
// How long it takes to fade out the message after holding
$fadeout 1.5

GAMETITLE
{
Half-Life
}

// Game title
$position -1 -1
$effect 0
$color 180 180 180
$color2 0 0 0
$fadein 1.0
$holdtime 3.0
$fadeout 1.5

GAMETITLE
{
Half-Life: Opposing Force
}