Swarm Keeper is a Dungeon Keeper inspired modification for Alien Swarm. The current release offers the following features:
- Build a dungeon for your creatures
- Order your imps to perform tasks like digging and collect gold
- Four different rooms: treasure, lair, hatchery and training
- Several basic spells
- A random level generator, supporting up to 170x170 tiles
- Waves of invading marines as enemies
This release is still more of a demo (i.e. only basic mechanics like imps, digging, creatures routines, basic room types, gold collection, etc) and the actually direction of the mod is still pretty much open.
Of course if you are interested in helping out, contact me.