Make trains into super-fast player killers that travel at very high speed but only carry 50% of their normal capacity. Original author Hermitude and then updated by DirtyBitch but now i must carry on the legacy.
Mods introducing new content into the game.
Adds air cleaner machine that reduces pollution using filters. Unlockable via technology, simple recipes. Vanilla friendly.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.