Wave defense with infinite scaling and lots of settings. Tower defense! Available in freeplay mode and as scenario.
Mods introducing new content into the game.
New ways to deal with enemies, be it attack or defense.
Tried to load the 0.18.25 version of the scenario in 0.18.18 factorio and it had a number of errors in control.lua, so wouldn't start the game. The regular worldgen dialog did popup first.
not for me... incompatible mods?