There you can see screenshots / videos and download a copy of the alpha and give it a try. Currently the engine supports the creation of randomly generated worlds, building blocks, breaking blocks, sounds, multiplayer and more. Once in the game, press F1 for a list of commands. You can even try connecting to my server at hornet.voxelgame.com
Down the road we have several gameplay ideas we plan to build on top of the engine. Where we plan to be a bit different then most voxel games is that this wont be for infinite exploring and digging, but more in the direction of pvp and co-op tower defense type of games in a fully changeable voxel world. But for now looking for feedback on performance, issues, bugs and just general comments on the engine so far. Also any technical questions I'm happy to answer here or on our forums. Thanks.