Update 22/02
This mod is now working like a dream. I have yet to encounter a crash today and the research tree is robust on the ufo side. That means you can research all the tech just like you do in the original ufo game. The TFTD research tree is also working well. Tomorrow I shall test the rest of it. Once everything works out, I will probably release it tomorrow night.
Everything about this mod is an enhancement from the original ufo, with full hybrid game play. The only regret is that I don't have enough time to perfect it more, like all the ufopedia from TFTD has the original pictures for weapons, crafts and armour. For now, only the Aliens has it. Also the original movement and death sounds for the TFTD Aliens are missing, so they are substituted with those from UFOs. Lastly, most of the mission briefing at the start of a mission is missing. Otherwise, this mod is utterly playable.
The new stuff I have also added, are UFO Alien using breathing apparatus underwater. Another innovation is Alien from land and sea uses separate unit properties, because this allow for land and sea armor properties vs weapon damage coming from land or sea weapons. Again, due to time constraint, I have yet to put in the feature for different weapon damage between land and sea weapons
Lastly, the terror missions are enhanced. With the exception of Cargo ship terror, every terror mission type now have a ufo component. For Ufo Aliens, it is the terror ship, for TFTD aliens it is the battleship. Please see screen shots. TFTD Aliens in this mod would participate in URBAN terror missions and ufo aliens now also participate in CARGO, Port and island terror missions.
There is more, I have also added three more terror mission types, like undersea terror missions. Like Underwater Mining settlement raid. Undersea Archeological raid and Under sea Geological expedition under attack.
This mod is fully playable and moddable. It is begging for extra weapon packs and ufos to be added to make it more fun. Unfortunately, my time allocation for it is over. After its variants like those I had mention in the thread before are released. I plan to stop modding ufo completely for a few months.
Terrain like Hobbes terrain pack are fully compatible to this mod. But you need to add it manually in the texture.rul in the land section.
The only regret I have for this mod is, it is not Feature complete like it is missing the underwater Hanger for undersea bases and Submersible combat/Interception.
For now, here are the new screenshots from the Terror missions, with ufos.