The Update is out now v0.0.6.
Patch Notes:
Cool new Stone texture on the ground
Moneysystem , you can buy ammo or a weapon
You can now pickup the weapon which you have thrown away.

More exciting stuff is coming in the future such as:
A start pistol,
Random textures on a wepon if you buy it (placeholder for a better system),
Spawn areas for the zombies (puppets),
More weapons (at least two),
Vanishing obstacles which you have to buy to expend the map,
Multiplayer (comming soon),
More buildings,
Perks,
G.A.U (Get an upgrade Machine),
Display of the current Wave,
HUD (comming soon),
Display remaining Zombies,
Special HUD for Zombie Mode,
and more.