I've put around 10 hours into a sandbox game as Japan, and had a few questions that I couldn't find answers for in the manual.
1. AI doesn't exploit its resources
I have all of my Uranium deposits maxed out, but still needed a bit more to support the number of nuclear things I wanted to build. Problem is, none of the countries with decent deposits of Uranium are mining it. No one in the world has more than 1-2 thousand units of Uranium, actually leaving me with the most. Its 1957, is the AI ever going to start building mines?
2. Roads vs. Rails
What are the differences, if any, between Roads and Railroads?
3. Super Garrisons
In 1955 I invaded Indonesia, mostly because I wanted to give the military aspect of the game a try. I build up a pretty nice force of marines, artillery, tanks, and supply trucks, but it has been a disaster so far. Indonesia doesn't seem to have anything but garrisons, but I just can't do anything against them in normal combat. It doesn't matter how many units I use, or what kind, they just get completely destroyed by the garrisons. The only way I've been able to do anything is to bombard the area with artillery until the garrisons are dead, and try and take it before another garrison spawns.
What am I doing wrong?
4. Unit Designs
Another problem I've had is simply not having designs for mostly everything. Meaning I have to buy designs from my allies, who never have what I want. There should be more generic unit designs, the current selection is really lacking in most areas.
5. Naval Transports
How do I load units into transports? For my invasion I built nice amphibious assault ships, but I could't get my units to load into them. I tried using the "Load Unit" order, but it didn't do anything.