Custom Params

The v0.3 has added the custom parameters system. It let players set various custom parameters as they wish. Those parameters are taken into account at the game creation and are saved in the save files.
Warning: modifying those variables could create some bugs and crashes. As you can set any value of you wish and there is no validity check, be very careful with your modifications. Modifying any variables, be it from in game or before creating a game, will disable achievements.

Modifying the variables before creating a game

This is a way to modify the variables for all the game you will create (single player or as host in multiplayer). It will not modify the values of an already created game.

1. Check the local files of the games, you'll see the folder StreamingAssets/Params/Solo/defaults_params.lua, and same for the Multi mode
2. Those two files contain the default parameters values used when creating a new game, depending of the mode.
3. To modify the values, create a "params.lua" file in your "My Documents" location (where your v0.3 saved games are), in a "\Params\<mod>\" subfolder you'll create. So you will have something like C:\Users\<user>\Documents\Dig or Die\<steam id>\Params\Multi\params.lua.
4. If the system detects a file at this place, it will read it to replace the default values.
5. Copy the lines you wish to modify from the defaults_params.lua file into this file. Edit them to any value you wish (for example: params.m_generationOreDiv = 0.3). Be careful, extreme values could create some unexpected issues (world creation too slow). You need to restart the game (and create a new game) for those changes to be taken into account.

Modifying the variables in game

This is a way to modify in real-time the variables. In multiplayer changes must be done on the server, and will also be applied on clients. Open the chat by pressing enter, then press one of the following commands. Use the TAB key to complete the param names and loop through the param list. Use the up/down arrow to go through your command history.
/param <param-name>  : To display a variable value
/param <param-name> = <new-value> : To change a variable value (host only)

Variables list

List updated for v1.1 build 854:

Variable name	default value in Solo	Default value in Multi	Use
m_startCheated	False	False	Whether or not the game is in creative mode (does not give or take ultimate items if changed)
m_eventsActive	False	False	Whether or not Hazardous Events are enabled
m_spawnPos	?	?	?
m_shipPos	?	?	?
m_gridSize	(1024, 1024)	(1024, 1024)	The map size.
m_seed	?	?	The seed for the world generation.
m_gameOverIfAllDead	x	True	Game over if everyone is dead (multiplayer only)
m_clientGetHostItems	True	True	Whether or not new players are given the same weapons and devices from host's inventory
m_banGiveLootToHost	True	True	Whether or not host receiving all items from banned players
m_nbPlayersMax	x	4	Maximum number of player slots (multiplayer only)
m_devMode	False	False	Whether or not players are given god mode, noclip, time control, and set boss spawn. Also gives 1 Ultimate Auto-Builder to the host's inventory if there isn't any.
m_checkMinerals	True	True	Respawn minerals if insufficient amount of minerals are detected.
m_dynamicSpawn	False	False	Spawn mobs according to the background.
m_cloudCycleDistance	1624	1624	The length of the cloud cycle, from left to right.
m_cloudCycleDuration	200	200	The duration of the cloud cycle in seconds.
m_cloudRadius	100	100	The horizontal length of the cloud.
m_rainQuantity	0.012	0.012	The amount of rain produced by the cloud.
m_generationOreDiv	1	1	A divisor for minerals quantity. This distance is used both horizontally and vertically, so if you set it to 0.5 you'll have 4x more minerals. Note: It must be changed before creating the game in order to have effect!
m_weightMult	1	1	Multiplier applied on the weight of blocks (easier to build if lower)
m_dropChanceMult	1	1	Multiplier applied on the drop chance when killing monsters (most monsters have 30% drop rate, while hounds and black hounds have 50%)
m_lavaPressureTopCycle	40	40	lava pressure push at the bottom of the volcano during lava rise
m_lavaPressureBottomCycle	2	2	lava pressure push at the bottom of the volcano during lava fall
m_eruptionDurationTotal	800	800	Total duration of eruption : duration before the normal lava cycle start agains, and a new eruption can be triggered
m_eruptionDurationAcc	180	180	Duration that the lava pressures takes to reach its maximum level (to avoid lava to rise too fast at the start of the eruption)
m_eruptionDurationUp	500	500	Duration of the lava pressure push during an eruption
m_eruptionPressure	125	125	Maximum lava pressure push at the bottom of the volcano during an eruption
m_eruptionCheckMinY	780	780	The height to check for minimum altitude of lava
m_dayDurationTotal	720	720	Duration of a day (daytime + nighttime)
m_nightDuration	108	108	Duration of a nighttime
m_gravityPlayers	1	1	The player gravity acceleration multiplier
m_eventsDelayMin	700	700
m_eventsDelayMax	1000	1000
m_respawnDelay	-1	20	Respawn delay of players (no respawn if negative)
m_dropAtDeathPercent_Peaceful	0	0	Ratio of drop of each mineral stack of the inventory at death in peaceful difficulty (diamond and sapphires are not dropped)
m_dropAtDeathPercent_Easy	0	0	Ratio of drop of each mineral stack of the inventory at death in easy difficulty (diamond and sapphires are not dropped)
m_dropAtDeathPercent_Normal	0.05	0.05	Ratio of drop of each mineral stack of the inventory at death in normal difficulty (diamond and sapphires are not dropped)
m_dropAtDeathPercent_Hard	0.1	0.1	Ratio of drop of each mineral stack of the inventory at death in hard difficulty (diamond and sapphires are not dropped)
m_dropAtDeathPercent_Brutal	0.15	0.15	Ratio of drop of each mineral stack of the inventory at death in brutal difficulty (diamond and sapphires are not dropped)
m_dropAtDeathMax	20	20	Max number of minerals dropped at deaths (best minerals are dropped first)
m_rocketPreparationDuration	300	300	Duration of the rocket start up
m_speedSimu	1	1	Game mechanics, plants & physics simulation speed multiplier
m_speedSimuWorld	1	1	Electricity, light, and liquids simulation speed multiplier
m_speedSimuWorldLocked	False	False	Lock ratio between game simulation and world simulation
m_rainY	880	880	The height of the clouds
m_fastEvaporationYMax	280	280	Water evaporates faster below this altitude
m_sunLightYMin	600	600	Highest altitude in which there is no more sunlight
m_sunLightYMax	665	665	Lowest altiiude in which there is maximum sunlight
m_monstersDayNb	7	7	The amount of monsters around the player during daytime.
m_bossRespawnDelay	-1	720	duration of respawn for boss. -1 means no respawn (in solo)
m_monstersNightSpawnRateMult	1	1	multiplier of the night spawn rate
m_monstersNightSpawnRateAddPerPlayer	0.3	0.3	added % of night spawn rate for each additional player
m_monstersHpMult	1	1	monsters hp multiplier
m_monstersHpAddPerPlayer	0.2	0.2	added % of monsters hp for each additional player
m_monstersDamagesMult	1	1	monsters damage multiplier
m_monstersDamagesAddPerPlayer	0.2	0.2	added % of damage for each additional player

Special variables that can be modified only by command. Caution : for multiplayer parameters, you'll need to save the game, quit, wait a few second that your lobby is reset, then reload the game.

Variable name	Use
m_difficulty	Difficulty of the game, between -1 (peaceful) and 3 (brutal)
m_hostId	do not modify it
m_hostName	do not modify it
m_gameName	the name of the game (only in multiplayer)
m_visibility	0 for public, 1 for friends (only in multiplayer)
m_passwordMD5	password in MD5 hash(only in multiplayer). If empty, no password

Examples

With rainQuantity set to 0.3 instead of 0.012

With generationOreDiv set to 0.3 instead of 1