Wild Games Studio is offering the opportunity to purchase Day One : Garry’s Incident in advance of the completion of this episodic first-person shooter. This is offered through GamerZ Rebellion, a new site they have launched to support what they are calling "alpha funding" (which does not seem to come with any discount over waiting for the game to leave alpha testing). Here's word on the game:

A survival type of FPS where reflexes and reflection are useful. You will have to survive in the jungle without pity, find food, build your own weapons and discover an ancient lost civilization with mysterious technology left behind many centuries ago by aliens. A game where the player is the master of his own gaming experience and feeds off the pleasure of improving it.