I did this alien egg from the Alien films not long ago, I had some restrictions which was to keep the model under 1000 triangles and with a texture of 256x256. Due to lack of time I decided to do only the egg as good as possible and not model a face hugger.
I modeled one half of the egg and then mirrored a copy to make a whole egg, using ZBrush it was easy to make it seamless.
The base of the egg is unique without any copy and mirroring. Together, the egg and the base gives a model with variety as seen in the picture below where every copy of the egg is rotated 90 degrees and looks different from each angle.
And here's the result, lit and rendered in Bitsquid.
I've done a couple of changes to the model, mostly to the proportions of the body to get him look even more mean and dangerous. But also to his armor, to give it a low-tech look. I've refined a couple of things and have used Dynamesh in Zbrush to accomplish otherwise cumbersome modeling, man I love that feature!
So, this Tuesday we released our game "Krater", in which I've been doing some character modeling and texturing. The game is awesome and it feels real great to be part of it! Check it out!
I realized I don't have to scan my sketchbook to show what I've done, like back in the days. Now I just use my smart phone and take some pics, sure it's not the same quality, but it's enough and it's faster. Haleluja technology! This are a couple of months old.