Much like the original Cube, the aim of this game is not necessarily to produce the most features & eyecandy possible, but rather to allow map/geometry editing to be done dynamically in-game, to create fun gameplay and an elegant engine.
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Do we have this already? If not, have a look what I have found.
This game, i think, if I have correctly read this, is built on the Cube 2 engine. It does not have really a beginning and end. There are a few mods which you can choose to have fun

While shooting you will pushed back and if you press "E" while playing, Editor comes and you can change items, doors, walls etc. direct.
So, have a nice look.
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