While it's worth playing, it's still not as fun as the original Tiberium Wars.
Kane's Wrath retains many of the fun gameplay elements as the previous Tiberium Wars did. With the addition of even more features that can create a difference between the original and the expansion, if only the quality of these new features was better. Still, don't get me wrong, the game is fun to play and if you enjoyed the original version, you would likely be amazed by "some" of the new stuffs added in the game.
The good:
1- The addition of the new global conquest mode, while it's not as good as it is in other RTS games, it's a nice first step for the development team to consider improving in future command and conquer games. A great way to put more taste in the "strategy" category of the game.
2- For Nod fans, the campaign itself is great, offering variety between direct base assault, building base quickly and sneaking missions....etc. It's also a good way to make GDI and Scrin fans to get used to playing with Nod and not just with their favorite faction.
3- Nice story where there are certain twists and revealing some of the unanswered questions from past C&C games, while the story spans from between second and third tiberium war, during the third war and finally after the third war. You get to know what exactly happened after the Firestorm, during the third Tirbeium war and finally what you can expect to see in future Tiberium games.
4- The new subfactions for each of the 3 sides offer some variety of gameplay. They can also help you focus on the sub faction that best matches your gameplay style with the main factions.
5- New epic units are one of my favorite features in this expansion. Not because they are big or look cool, but because of how they need special ways to be constructed and also their combat performance can turn the tide of battle upon their appearance, whether it's through the single player campaign, skirimish or multiplayer.
6- The movies after each campaign is once again the cool live-action movies as it was in the original and past command and conquer games. I've realized that the movies in the expansion seem a bit cooler than the original due to seeing more action and less "Commander, your mission is blah blah blah" scenes. It's still not as cool as the movies in the Tiberian Sun, but still can keep you up and watching them.
7- New units and powers, while some of them seem useless or not so outstanding, are still some great additions to the game. Gaining and losing units/powers depending on your subfaction is another challenge that can help the player know which side is truly suitable for his or her gameplay style.
The bad:
1- As I mentioned earlier, the Global Conquest isn't as good as in other RTS games. There aren't any rewards for beating it and there doesn't seem to be anything within this mode that can encourage the player to keep on playing. Perhaps some live action scenes even during this mode?
2- As most people complained, the single player campaign is limited to the Nod faction only. While I enjoyed the campaign, it still doesn't put up much value to the other factions when you realize that you are forced to play only 1 faction in the campaign mode.
3- The sub factions don't offer enough variety to the gameplay. Some sub factions might make you feel that there are more disadvantages than advantages to picking them. So many people would end up preferring to stick with the original factions.
4- Once again, GDI and Scrin remain having similar firepower and defensive capabilities whereas Nod are the only faction that seem unique from the other two. Even with the subfactions, they don't offer enough uniqueness from each other.
5- The music, like in the original Tiberium Wars, is not so enjoyable. It's the same old "2 minutes out of combat music and 20 seconds combat music". It's nowhere as good as it was in Tiberian Sun or Generals.
I was more disappointed than excited with this expansion. I did enjoy the single player campaign, despite it was Nod-only, and the story, but as for the rest, they just fell from my interest pretty soon. It's not a bad game though; just not as good as it was supposed to be.