anoffday: How is combat in Arcanum? Does it feel slow like FO? I don't mind turn based at all. I like a lot of turn based rpgs, but FO just feels so slow. Also, waiting for my turn and missing like 5 times in a row and then dying doesn't help to make me want to keep playing FO.
There are different settings for combat in Arcanum. You can use full turn-based combat, which is slowest, but is my preferred method because I like time to think and plan my strategies. Then there's fast turn-based, where enemies' actions are sped up so they happen really fast and you get back to your turn quicker (you can do a similar thing in the Fallout games by adjusting the "combat speed" slider in the options). Finally, there's real-time combat. I found this moved much too fast and was really hard to control, but some other players prefer it.
Even on full turn-based I didn't think that combat was too slow, but that might just be personal preference. I liked being able to see clearly what each of the enemies was doing on their turns so I knew how to react once my turn came back up. But you can experiment with the different settings to get one you like, and of course you can switch between them at any time.
As for the comparisons to Fallout, Arcanum is definitely it's own game. In many ways it is reminiscent of Fallout, mainly in how there are always several ways to get around every obstacle, there are moral choices to make, and there are a vast array of different character builds and ways to roleplay through the game, meaning you'll want to replay with lots of different characters. But it's also different to Fallout in many ways; Arcanum has a much stronger plot and in some senses could be seen to be more linear than Fallout, there's generally more combat in Arcanum and it's better streamlined than the system in Fallout, and the world of Arcanum has a very different feel than Fallout. Some have argued that Arcanum is not as well balanced as Fallout, in that certain character builds will have a much easier time than others, but this didn't really bother me... even if a certain build is harder, it's still fun. As I played Arcanum, I could tell that it was by some of the Fallout developers but it still felt unique and different.
I would recommend checking it out even if you weren't a huge Fallout fan. If you do decide to try Arcanum, be sure to grab the Unofficial Patch (check the sticky thread) for lots of bugfixes. Also consider the high-res patch for allowing custom resolutions (including widescreen, which the original game did not support), and you might also want the High-Quality Townmaps for some nicer-looking environments.