I have just finished the game! It is great, probably the best strategy game I played since Red Alert 2 =), it is great and I recommend it for all.
Red Alert 2 introduced the navel forces before, but to a limited extent, though it was the first game I played where you can build navel factory. In Red Alert 3 sea makes 40% of the game, you can even build your base in the sea, with only the barracks and the war factory for the allies and the soviet that can not be built in the sea.
Another thing I liked is the air forces; they are well introduced to the game and added another flavor, not to forget that many units are more of an assistant unit rather than a worrier unit.
The graphics are great and the sound tracks are greater, actually I loved the most the first soundtrack when you run the game, it is called soviet march, unbelievable great. I thought it was the Soviet Union anthem for the first time, but it makes you feel like “give me a war right now”. They made many remixes to Red Alert 2 soundtracks, and they are great, especially “Hell March 3” though it is not as good as “Hell March 2”.
The nice thing about the game is the duality of many of units, some can transport through water and grounds, some can switch between ground and air, others can use air and water, and I found only one unit that can use the three mediums. Some units can use only one of those mediums.
Many of the classical units had made it to RA3 too, but where a bit modified. Most notably for me was the allies spy. He is now a great threat; he can turn your units against you now for a low price.
The best thing is that this game has really become a strategy game. The well known strategy of build plenty of mirage and charge don’t work here. Each unit has a special ability or can switch between different modes.
Another thing I had in mind was that this game is the fruit of all the pervious command and conquer series, they used what was the best in all of the former games to come up with this one, the promotions from generals, the expansion vehicles from terbium wars and the classical Red Alert + things newly designed for this game alone.
One disappointing thing is the computer commander; he can sometimes finish the game for you while you are still setting there! Except for the last two missions of the rising sun where he was totally annihilated at the beginning of the game leaving me alone =)
I am looking forward to play it on-line or in a network game =)