It seems a bit counterproductive to making a puzzle game that you can't control both aiming and shooting the portals with the mouse. Maybe give us the option to remap the controls next time?
In some cases in which twins are formed at conception, one of the two will absorb the other into its body while they're still forming and become what's called a chimera. This actually happens a lot, and this seems to be a much darker take on that.
If you're going to make a sequel to your popular game, at least make an attempt to make it more fun by addressing people's suggestions for the first game. Don't make it an expansion pack that only serves to indulge your thought process that doesn't make any sense.
Don't rate this game down because of the graphics, because the graphics aren't always the point. Sometimes the creator just wants to make a great story that people actually like playing. So shut up unless you've done better.
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