Nearly playable

‘playable’ was the goal that I hoped I would achieve in this Ludum Dare, as I’ve never made a ‘playable’ game before. I’ve very nearly got my game idea – which I purposely made the simplest game possible – so I would at least be able to enter this Ludum Dare. However, as the only rendering engine for C++ that I knew how to use was 3D… I now have to make some 3d graphics, which I have no knowledge how to do. Also, I don’t have a sound engine I’ve ever used before. My submitted game may be a bunch of grey cubes shooting at other grey cubes!