If the launch trailer and all the previous videos are not enough for you, here is a 9 minutes-long overview video of Assassin's Creed IV: Black Flag that shows a lot of things. So if you planned to buy the game you shouldn't watch this as one might think it reveals a bit too much.
@Moonwalker: There's no substituting playing with real players. Playing with bots too much will just give bad habits :) (5 Hours ago)
better already. These matches can get quite tense and hectic and that's great. Really digging the diversity of these characters and their abilities. (5 Hours ago)
@GriftGFX: Well I decided to check out arcade and quick play and I got my ass handed to me. Holy shit some people are fast as hell and very accurate. Later on I played with friends and it went a lot (5 Hours ago)