Preferred Gamerules
A small mod that allows you to customize the default values of game rules - those parameters that are automatically set when creating a new world.
All preferences are saved in the .minecraft/config/preferred-gamerules.properties file. Each game rule has the gamerule.* prefix.
If you have ModMenu installed, you can edit settings directly in the game. In this case, only values that differ from the standard vanilla settings will be written to the configuration file.
Related Mods
Gamerule Menu
Makes the game rules menu accessible in singleplayer worlds
Cloth Gamerules
Alternative interface for the game rules screen based on Cloth-Config