Phantom EFX and 8monkey Labs have announced that there is a series of updates to their recently launched first-person shooter, Darkest of Days. PC users of Darkest of Days are now able to use 8monkey’s own level editing software, Habitat, to create their own levels in which to wreak havoc.

Phantom EFX also released an “Instant Action” gameplay update that will allow players choose their favorite weapons and travel back to their favorite missions with a weapon set of their choosing.

The release of Habitat allows PC gamers to now create their own Darkest of Days mods using 8monkey’s proprietary Marmoset Engine. This update even unlocks shader code, so graphical mods are also a possibility. The patch also addresses many consumer demands, including: support for fourth and fifth mouse buttons, a mouse smoothing option, fixes for hardware specific OpenAL and ATI crashes, and new PhysX system software.