Guncraft is a voxel-based first person shooter that boasts fully destructible environments, the ability to construct individual blocks or full structures in a single click, tons of killstreak rewards such as helicopters, jetpacks, bunker buster missiles, drones, and turrets, and a fully featured map creation tool that also features a voxel map importing function (using the Substrate C# engine). Play traditional modes like Deathmatch and CTF, or totally unique modes like Lava Survival and Siege Mode. On top of that, there are standalone servers, peer hosted servers, clan support and friends lists, in and out of game chat, leaderboards, and much, much more. Source: The Developer Website.