The 1.4 update (and subsequent builds like 3559) introduced several core gameplay mechanics:

: A manually activated defensive building that fires a barrage of small missiles over a wide area.

: Automatically (or manually) fires fire-retardant foam to extinguish nearby blazes.

: This cycle boasted major optimizations, reducing game launch and save-loading times by approximately 37% . Cross-Expansion Integration

Builds in the 1.4.35xx range specifically added precepts to the Ideology expansion that interact with Biotech :