The 7 Days to Die website now offers this trailer with about 15 minutes of gameplay from this survival/crafting game. Here's a description:

An open world, voxel-based, sandbox game blending the best elements of FPS, Survival Horror, RPG and Tower Defense style games. "Seven Days to Die" looks to carve out its own space giving gamers what they really want with a unique combination of combat, crafting, exploration, and character growth. It's not just Survival Horror anymore its "Survival Horde."