Game start modding - Stellaris Wiki (2024)

It can be confusing, especially to new modders, how exactly the game sets up a new Galaxy and how to modify anything during Game Setup. Here is a quick reference for everything that the Vanilla game does when setting up a new game.

To understand this page, it is recommended you familiarize yourself with Events and On Actions.

Game Start Modding[edit | edit source]

The most-compatible way to mod game setup is to add custom events that file after the built-in game events. It is also possible to fire events before built-in events. The reason that events are the most compatible way to do this is that they don't overwrite any of the built-in effects or effects, and thus won't conflict with other mods that also want to edit the game setup process.

For adding technologies, use the on_action empire_init_add_technologies which is called once per country. This is the intended place to grant free technologies as part of an origin, civic, or other custom startup conditions. Here is a sample event:

country_event = {id = my_event.1is_triggered_only = yeshide_window = yestrigger = {# your conditions go hereis_regular_empire = yesOR = {has_valid_civic = civic_corporate_dominionis_megacorp = yeshas_valid_civic = civic_merchant_guilds}}immediate = {# grant technologies heregive_technology = {tech = tech_space_tradingmessage = no}}}

For adjusting the starting conditions on an empire's homeworld, use the on_action empire_init_capital_planet which is called once per country in the scope of that empire's capital planet. Here is a sample event:

planet_event = {id = my_event.2is_triggered_only = yeshide_window = yespre_triggers = {has_owner = yes}trigger = {# your conditions go here - notice how it scopes to the planet's ownerowner = {is_regular_empire = yesOR = {has_valid_civic = civic_corporate_dominionis_megacorp = yeshas_valid_civic = civic_merchant_guilds}}free_building_slots > 0 # this checks that the planet has space for a building}immediate = {# make changes to the capital planet here, you can scope to the solar system like this: solar_system = { <code here> }add_building = building_galactic_stock_exchange}}

A special case for game setup is creating a new origin or civic with a secondary species. The built-in code will not correctly spawn secondary Pops. Instead, it is recommended to follow this template that uses an on_action to disable the built-in setup event for the relevant empire(s), and then spawns Pops as desired for the primary and secondary species but also executes the built-in capital district/building/blocker, and so on code.

Review the Game Start Execution Order section for the full details of the when code executes as a new game is starting.

Game Start Execution Order[edit | edit source]

After pressing PLAY on the Game Details screen to begin a new game, scripts execute in the following order:

• Galaxy is created, using common/solar_system_initializers (See System modding)

• generate_empire_home_planet
• generate_home_system_resources

• on_action empire_init_add_technologies is called

• event game_start.8 - Adds starting resources to Empires and some techs for specific Origins and Civics

• on_action empire_init_capital_planet

• event game_start.12 - Sets up capital planets by calling the following scripted effects:

(excludes set_planet_flag = special_start_planet from solar_system_initializers)

• generate_start_deposits_and_blockers
• generate_start_buildings_and_districts
• generate_start_pops
• generate_home_planet_final_pass
• void_dweller_home_planet_setup

• on_action empire_init_create_ships

• event game_start.9 - Creates beginning ships for Empires

• on_action on_initialize_advanced_colony

Only for the extra colonies of AI empires that were flagged as Advanced Starts by the engine during Galaxy creation.

• events game_start.20 through game_start.23 - Sets up the additional colonies and creates their pops

• on_action on_become_advanced_empire

• event game_start.6 - adds more starting Resources, technologies, and builds more Mining and Research stations

• on_action on_game_start

• event game_start.1 - Lots of necessary things that the engine requires, as well as setting up flavor events for the player and/or certain Origins/Civics
• event game_start.2 - Clears Planet Modifiers from Capital planets
• event game_start.3 - Sets up Advisor and Tutorial
• event game_start.5 - Sets up the Nomad Fleet (If Megacorp is NOT active)
• event game_start.31 - Spawns Wormholes

If DLC Distant Stars is active:

• event distar.290 - Create Corrupted Avatar system
• event distar.252 - Setup Phaseshifting Planet (if Galaxy creation spawned it from solar_system_initializers)
• event distar.295 - If Ratling systems spawned, make sure they have Hyperlane connections
• event distar.8000 - Randomize L-Gate outcome

• event colony_mod.100 - Adds Titanic Life blocker to planets with the Planet Modifier
• event game_start.50 - Setup Nebula effects for systems in Nebulas
• event galactic_features.406 - spawn VLUUR
• event clones.1 - Make Clone Army pops unable to be Genetically Modified
• event central.1 - Chance to initialize the Central Crystal event chain for Void Dwellers
• event akx.8000 - Chance to initialize the Horizon Signal system

• on_action on_game_start_country

• event game_start.33 - Setup conditions for specific Origins/Civics, and build starting home system Mining and Research Stations
• event game_start.10 - Setup orbital stations and customizations for Fallen Empires
• event necroids.4 - Switch Guaranteed Habitable Planets to Primitives for Necrophage Origin
• event clones.2 - Give Cloning techs to Clone Army Origins
• event clones.3 - Initialize Clone Vats for Clone Army Origins

• Galaxy loads for Player
• Intro Window displayed to player

Contents of Intro Window broken into three parts (location = 0/1/2) and pulled from common/start_screen_messages/

• on_action on_game_press_begin

• events tutorial.104 and advisor.1 to start the Tutorial and/or Advisor messages.

The Game has BEGUN![edit | edit source]

Retrieved from ""