I tried two of the Creavion maps: Kamah and Sacrimossa. What can I say about them? I simply say that their build impressed me more than anything released until now for UT1, included SP stuff. And these are just DM maps. Kamah uses Mekalopolis from UT3's OST, possibly the best track of the Tournament series out there.
Kamah is splendid, obviously the author had the ambition of making the map as good as the stuff from UT2k4 or even UT3. It's a combo of the beauty that those two games have to offer. Oh, and it's a beach, and the only one done well in UT1, at least from the ones that I have seen. I'd say the same thing regarding the jungle theme; probably everybody who played SP-Antalius wanted more jungles from Creavion.
Map needs 16 players or more to make it justice. The bots play well, get everything and like to hide in the plants...
Still remember the days when Creavion was starting to make it in the editor. Has been a good time indeed. Excellent.
Sacrimossa is UC2-inspired. Futuristic Egyptian theme, if you haven't played that game. The map is extremely detailed, and those pillars are tall enough to make you feel an ant compared to the place. It gave me this impression/feeling and I loved it. Insanely great, or greatest use of textures also (they come from UC2 as well).
Gameplay-wise, it's much easier to get into it than Kamah, even if telefragging at the UDamage's position can be sometimes annoying.
Time to see the rest. Some of the maps lag a lot though, especially the CTF ones.