How to Set Up TTT on Your Garry's Mod Server

Trouble in Terrorist Town (TTT) is already included in Garry's Mod. You do not have to install the gamemode. You only need to select it, set a suitable TTT map and configure the rounds the way you want.

Add a TTT map to the collection

You can recognize TTT maps by the ttt_ prefix in their name. Your server's default map gm_flatgrass is a Sandbox map and not built for TTT – it lacks the spawn and weapon points TTT needs. You therefore need at least one TTT map from the Steam Workshop.

1. Search for a map in the Workshop
   Search for ttt_ in the Steam Workshop for Garry's Mod to find TTT maps. One very popular map, for example, is ttt_minecraft_b5 with the ID 159321088.

2. Add the map to the collection
   Add the map to your server's Workshop collection. How to create a collection and enter it in the Workshop ID field is explained in the guide Add mods.

3. Find out the map name
   For the settings you need the name of the map's .bsp file, not its title in the Workshop. It is often shown in the title or the description of the map. The map with the ID 159321088, for example, is called ttt_minecraft_b5.

Set the gamemode and map

1. Open the dashboard
   Open the dashboard of your server.

2. Open the settings
   Navigate to the Settings.

3. Enter the gamemode
   Enter the following value in the Gamemode field:

   terrortown
   

4. Enter the map
   Enter the name of your TTT map in the Map field, for example:

   ttt_minecraft_b5
   

5. Restart the server
   Save the setting and restart your server. Your server now starts with TTT on the map you set.

How to change the gamemode in general is explained in the guide Change gamemode. More about changing the map can be found under Change map.

Configure TTT

You set the TTT settings through ConVars in the server.cfg.

1. Open the file
   Connect to your server via SFTP and open the following file:

   /garrysmod/cfg/server.cfg
   

2. Add the settings
   Add your TTT settings below the line // Add custom lines under here – one setting per line. You can find the available settings in the tables below.

3. Restart the server
   Save the file and restart your server.

Rounds and map change

Setting	Description	Default
ttt_preptime_seconds	Length of the preparation phase in seconds before the roles are assigned	30
ttt_firstpreptime	Length of the preparation phase only for the first round after a map loads	60
ttt_posttime_seconds	Time in seconds after a round has ended before the next preparation phase begins	30
ttt_haste	Haste mode: the round time starts short and is extended with every death (1 = on, 0 = off)	1
ttt_haste_starting_minutes	Initial round time in minutes in haste mode	5
ttt_haste_minutes_per_death	Minutes added to the round time per death in haste mode	0.5
ttt_roundtime_minutes	Round time in minutes when haste mode is off	10
ttt_round_limit	Maximum number of rounds until the map is switched	6
ttt_time_limit_minutes	Maximum time in minutes until the map is switched	75
ttt_minimum_players	Number of players that must be on the server before a round begins	2

Traitors and detectives

Setting	Description	Default
ttt_traitor_pct	Share of players that become traitors (0.25 = 25%)	0.25
ttt_traitor_max	Maximum number of traitors	32
ttt_detective_pct	Share of players that become detectives (0.13 = 13%)	0.13
ttt_detective_max	Maximum number of detectives	32
ttt_detective_min_players	Minimum number of players before there are detectives	8
ttt_detective_karma_min	Minimum karma a player needs to become a detective	600

Karma

The karma system punishes players who hurt or kill members of their own team. If a player's karma is below 1000, they deal less damage.

Setting	Description	Default
ttt_karma	Enable the karma system (1 = on, 0 = off)	1
ttt_karma_strict	Damage drops faster the lower the karma is	1
ttt_karma_starting	Karma players start with	1000
ttt_karma_max	Highest karma that can be reached	1000
ttt_karma_persist	Save karma permanently so it is kept across map changes and server restarts	0
ttt_karma_low_autokick	Automatically kick players with too little karma at the end of a round	1
ttt_karma_low_amount	Karma threshold at which players get kicked	450
ttt_karma_low_ban	Also ban kicked players	1
ttt_karma_low_ban_minutes	Length of this ban in minutes (0 = permanent)	60

How TTT changes the map

TTT changes the map by itself. At the end of every round the gamemode checks whether the round limit (ttt_round_limit) or the time limit (ttt_time_limit_minutes) has been reached. If one of them has been reached, the server loads the next map 15 seconds later. The time limit is only checked at the end of a round, so a running round is not interrupted.

Which map is loaded next is determined by the server's map rotation. TTT has no built-in map vote. If you want to decide yourself which maps are up for selection and let your players vote on the next map, use an addon such as MapVote.

Set up a map vote with MapVote

The MapVote addon replaces TTT's automatic map change with a vote. Once the round or time limit has been reached, the players choose the next map from the TTT maps on your server. By default, the current map and recently played maps are not up for selection. You do not have to edit any files of the gamemode for this.

1. Add MapVote
   Add MapVote with the ID 151583504 to your Workshop collection.

2. Add more maps
   Only maps that are present on your server can be voted for. So add every TTT map that should be up for selection to your collection as well. Since the current and the most recently played maps are excluded, you should add several TTT maps so that enough maps are up for selection.

3. Restart the server
   Restart your server. On the first start MapVote creates its configuration file.

4. Adjust the configuration (optional)
   Stop your server before you edit the file and start it again afterwards. You can find the MapVote settings via SFTP in the following file:

   /garrysmod/data/mapvote/config.txt
   

   The file contains the settings from the table below, for example:

   {"MapLimit":24,"TimeLimit":28,"AllowCurrentMap":false,"EnableCooldown":true,"MapsBeforeRevote":3,"RTVPlayerCount":3,"MapPrefixes":["ttt_"],"AutoGamemode":false}
   

Setting	Description
RTVPlayerCount	Minimum number of players for "Rock the Vote" to work
MapLimit	Number of maps shown in the vote
TimeLimit	Length of the vote in seconds
AllowCurrentMap	Allow the current map in the vote (true / false)
MapPrefixes	Prefixes of the maps that appear in the vote
EnableCooldown	Take recently played maps out of the vote for a while (true / false)
MapsBeforeRevote	Number of maps that have to be played before a map can be voted for again
AutoGamemode	Switch to the gamemode that matches the chosen map (true / false)