well, keen1 & 4 aren't really shareware...
i think a better definition would be freeware portions of a complete release. if you had the full version of these titles, you wouldn't have 1 and 4 with more features, you would have 1, 2, 3, 4, & 5.
1 and 4 would be unchanged. and, therefore, as there are no differences between the freely available 1 and 4 and the registered 1 and 4, they are both technically freeware.
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