The Altera Centauri collection has been brought up to date by Darsnan. It comprises every decent scenario he's been able to find anywhere on the web, going back over 20 years.
25 themes/skins/styles are now available to members. Check the select drop-down at the bottom-left of each page.
Call To Power 2 Cradle 3+ mod in progress: https://apolyton.net/forum/other-games/call-to-power-2/ctp2-creation/9437883-making-cradle-3-fully-compatible-with-the-apolyton-edition
If I remember correctly, you have to know of the existence of the foreign cities, and of course you must have the good they demand. (Well that is CTP2 I think.) In CTP1 you have to offer the goods on the free market for a certain price. It never worked when I tryed this. I only was able to establish trade routes with other civilizations, when they offered a trade route.
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