Really? I think your above-average knowledge of the intricacies of web design may actually be misleading you here. My guess is that normal people can't actually tell radiobuttons from checkboxes until they click around and find they can't select two options at once.
I think these look incredible and I can't wait for a usable version.
> normal people can't actually tell a checkbox from a radiobutton until they click around and find they can't select two options at once
this may be true for a certain definition of normal, but the point for this game example is that you don't need EITHER: just have the user click on the desired option and let them be lead to the next/confirmation page... drop dead simple 'cause, as wise men have said before: "no UI" > "less UI" > "your UI" (where ">" = "is better than")
I think these look incredible and I can't wait for a usable version.
[Edited for clarity]