Oh yeah, i forgot...
When the menu is open, i can move forward and sideward through ther WASD keys, move up and down through Q and E, and so on.
But as soon as i leave the menu, i can't move anymore through the keys. Except one thing: When I found a "stable point" (through moving while the menu is open), a point at which the camera isn't moving by itself, then I can move a bit up and/or down using q and e.. but in most cases the camera is going to become crazy again. In that "stable point" i can even move the mouse without much reaction... and even if i found a stable point which points to Garden, I can't click on it... err I can, but nothing happens.
Sometimes it feels like.... yeah how do i describe it...? When you play an usual 3D-Game. Ego-Shooters, Jump'n Runs, whatever! And you jump or fall inside an solid object, through a bug. There are usually 2 things that would happen. 1st nothing happens at all. You move around inside the object, and as soon you leave it, you can't go back in. 2nd you get slowly pushed out through the physic engine. Like levitating... smooth and slow.
The 2nd thing is like what happens to the camera in darwina. It moves slowly to the ground, like it's about to get pushed out of the planet. While its moving, it going up and down a bit, but really fast... like headbanging.

When it reaches to bottom, the camera looks upwards and begins to spin. That is what mostly happens.
When I move outside the planet, through moving with the menu open, the camera gets sucked into the planet again, and then inside it's the same as ever... spinning, moving, headbanging.
Edit:
And maybe I wasn't clear enough about the moving through the mouse. The map doesn't react at all. One exception: When the game startes and the camera is still at the starting point, the crazy movement starts slow, but i can speed it up when i move the mouse, becaus then the cursor will move fast to the bottom of the screen and the camera moves faster to the bottom of the planet.
While beeing in the menu i can steer through the mouse, but only as far as the screen allows me. For example: If i want to make a 360° turn to the right. Then i have to move the mouse to the left corner on the screen, click the right button, move it right until i reach the other end of the screen (mouse is invisible while clicking), release the mousebutton and start from the left again if i didn't already make a whole 360. That's unusual for mouse-controling, but maybe completely casual for this game.
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Another idea:
When i play an usual 3D-Game and through some sort of bug, i can see a mouse pointer. Then i usually see the following: The pointer sticks to the middle of the screen, no matter what. If you move it away from it, the camera turns, and the mousepointer always returns to the center again... few times a second. You see flickering the cursor, but it always goes back to the center.
Somebody will now say "sure it does" and yeah, that's what i also think, as far as i understand mouse steering. But whatever i look at in darwinia, it doesn't show this behavior.
I know, there is a second possible steering, when the cursor is moved freely around the screen and the camera starts to move if the cursor reaches the edge of the screen. But darwinia doesn't seem to have a steering like this. It rather seems to have the first one i was talking about.