The Dark Times is a Star Wars Battlefront II mod with a heavy single-player focus. It adds many new features to the game, including (but not limited to!) wave modes, randomized units, heroes, and skyboxes, and AI hero support. Its sequel, Rising Son, adds more of the above as well as several new maps and scripted missions.
I loved the campaign in this mod. The class system was greatly improved by having different special classes on different maps. My only problem with this mod is when you have to escort the Mon Cal engineers on the Mon Cal level, they will kill each other if you have FF on.
My Absolute Favorite part of this mod is the Mon Calamari Space map, I have oodles of fun on that map. I recommend playing it with a Flight sim joy stick (I use the Logitech Attack3).
This mod is fantastic. The custom levels are spot-on and everything feels like an actual part of the game. The new game modes (especially Wave) are absolutely awesome and everything is worth playing over, thanks to the random heroes and villains. Speaking of heroes and villains, They are one of the highlights of the mod. There are LOTS and they are each different and cool in their own way. One of my personal favorite maps is the Coronet Rail because being packed into a small, high-speed train with a blaster rifle feels very exciting.
Dark Times may add more content, but it often does not feel like it fixes a great deal of the present problems in the vanilla game. While the mod does provide a new campaign, the difficulty is turned up about 50 notches (starting with only 32 reinforcements while having to run across an entire map to grab about 50 holocrons, is not exactly a realistic difficulty. The only way you can complete some missions is by falling back on 1.3 Patch, which thankfully is at least included). Like wise, some features, such as the lack of units reloading most standard weapons (with also most weapons also not ever running out of ammo) is rather unbalancing, and when in the hands of the AI, can be quite frustrating. Lastly, the space battles seem less entertaining than even before, and I barely played the space maps (aside from one) more than once.
On the positive note, there were some times I was impressed. Frankly, the Millenium (or however you dang well spell it) Falcon level is quite challenging, and there were -some- campaign levels worth revisiting (primarily ones that involved Force users, and the initial droid mission). Some new units actually fit in better (such as a medic), and the attempt to incorporate other units (such as Dark Trooper Phase 1) are well done. It really depends on what you're looking for in a mod.