Question: you're using the super-fine voxels for the aesthetic, (and it does look amazing), but only coarse grained voxels for gameplay? I can see the trade-off

Question: you're using the super-fine voxels for the aesthetic, (and it does look amazing), but only coarse grained voxels for gameplay? I can see the trade-off makes sense, for the reasons you mention (path-finding, monsters can get through). It's just that a fine-grained modifiable world would be super-amazing. It seems to me that your rendering tech could do that just as well... if the edits only occurred on-screen, they are manageable (and all the rest can be rendered off-screen to bit-maps and cached, as you do now). Of course, what I'd really love is a living world, which also changes off-screen. e.g. erosion. But I think that may be asking too much of present-day hardware...? marketing advice: copy notch. Do little updates as often as you can, for every small thing you do. It gives you energy, engages long-term followers and - most important - is advertising, so more people know about it.