Comparing the two games Fallout: New Vegas and The Elder Scrolls 5: Skyrim are like trying to compare apples to oranges.
Fallout:NV is a post apocalyptic simulator set in post-nuclear war American Southwest, specifically in the Mojave Desert. TES5:Skyrim takes place in the mountainous regions above it's very popular counterpart TES4:Oblivion. Many people have probably heard or have known that Fallout:NV was incredibly bugged for a game that Bethesda published, but they'll not mention that it was Obsidian Entertainment that did all the game building. On the whole, many people like TES4: Oblivion, the game world was enormous, the graphics were ahead of their time (back in 2006) and the whole game ran smoothly about 99% of the time. People did say that the voice acting could be improved, to which I will admit it could have been. While others have pointed out the clunky combat system that could take some getting used to.
Each game was buggy when it first came out, Skyrim is almost guaranteed to have some major problems, but realize those issues won't last long. Bethesda is usually very good when it comes to fixing their own games, and since Fallout:NV was created by Obsidian Entertainment, they don't have complete control over the game. So judging it by way of producer won't necessarily work.
If you're worried about genre, it's apples and oranges again. Skyrim will take us to the frozen, bleak area north of Cyrodiil with swords, spells, and bows. The game has stated that it will allow players to use any kind of combination of the three (within reasoning of what you can wield with two hands), in an attempt to streamline the combat from TES4: Oblivion. Fallout:NV on the other hand, took us to the Mojave Desert, where different destinies of the Mojave clashed using guns left over and made from whatever one could scrounge up. Grenades were there, but their physics took some getting used to, and VATS made it easier to hit faster targets. Overall, Fallout:NV is a RPG shooter, with melee weapons in it, while Skyrim poses to be a perhaps more 'traditional' RPG wherein you fight dragons, use magic instead of stimpacks, and use ranged combat as a specialization rather than it being a question of "which flavor of ranged weapon (bullets or explosives)" will I use to kill this non-descript Powder Ganger, Fiend, Securitron, etc.
Enemies in Skyrim look to be much more varied in size and strength. In Fallout:NV Deathclaws were perhaps the hardest enemy to kill, the notorious Legendary Deathclaw among them. Creatures we remember might be Bighorners because they took laughably little damage and their heads always seemed to just pop off at the slightest pressure, Bloatflies and Cazadors which are becoming more on-par with each other due to the downgrade of the Cazador's DT rating and the shortening of it's detection range. Skyrim offers new creatures like Frost Trolls, Giants, Dragons, Ice Wraiths, and Giant Spiders, which only seems like a sampling of new distinct creatures. I said distrinct, there are zombies, skeletons, and probably ghosts, but raiders, marauders, bandits, they're in either game, marred by whatever combat system they use, with Skyrim (and Oblivion) both having the potential for more varied fights due to their range of weapons.
If one were to compare the games as wholes, it would ultimately boil down to one's personal experiences with each game. Since Skyrim isn't released yet, we can only compare it to TES4:Oblivion as a reference. Would you like Skyrim? If you like to play RPG's and you like getting immersed in a gameworld, keep a close eye on Skyrim as it comes out, because it'd have to be absolutely TERRIBLE to not beat Fallout:NV.
***Edit:
I've seen some comments on the inventory systems and leveling, so I'd like to also mention that Skyrim will compose a mixed leveling system, like Oblivion and Fallout.
Skyrim says that it will have a modified Skill system, where in you level any certain skill based on how you use it. However, I'm still a little unclear on how that affects your leveling. From what I understand, they won't make you level up ONLY major skills in order to level up, but then again, I am only interpreting what I've read.
The inventory system will remain largely unchanged, but perhaps you'll be able to carry more things in Skyrim, as in Oblivion, it was very easy to make it possible to carry more loot than any human should be able to right from the start. Where as unless you modded, Fallout can give you a total 250-300 weight limit. Oblivion gave us about that much to start with, and currently I can carry 600 pounds of weight.
Fallout:NV is a post apocalyptic simulator set in post-nuclear war American Southwest, specifically in the Mojave Desert. TES5:Skyrim takes place in the mountainous regions above it's very popular counterpart TES4:Oblivion. Many people have probably heard or have known that Fallout:NV was incredibly bugged for a game that Bethesda published, but they'll not mention that it was Obsidian Entertainment that did all the game building. On the whole, many people like TES4: Oblivion, the game world was enormous, the graphics were ahead of their time (back in 2006) and the whole game ran smoothly about 99% of the time. People did say that the voice acting could be improved, to which I will admit it could have been. While others have pointed out the clunky combat system that could take some getting used to.
Each game was buggy when it first came out, Skyrim is almost guaranteed to have some major problems, but realize those issues won't last long. Bethesda is usually very good when it comes to fixing their own games, and since Fallout:NV was created by Obsidian Entertainment, they don't have complete control over the game. So judging it by way of producer won't necessarily work.
If you're worried about genre, it's apples and oranges again. Skyrim will take us to the frozen, bleak area north of Cyrodiil with swords, spells, and bows. The game has stated that it will allow players to use any kind of combination of the three (within reasoning of what you can wield with two hands), in an attempt to streamline the combat from TES4: Oblivion. Fallout:NV on the other hand, took us to the Mojave Desert, where different destinies of the Mojave clashed using guns left over and made from whatever one could scrounge up. Grenades were there, but their physics took some getting used to, and VATS made it easier to hit faster targets. Overall, Fallout:NV is a RPG shooter, with melee weapons in it, while Skyrim poses to be a perhaps more 'traditional' RPG wherein you fight dragons, use magic instead of stimpacks, and use ranged combat as a specialization rather than it being a question of "which flavor of ranged weapon (bullets or explosives)" will I use to kill this non-descript Powder Ganger, Fiend, Securitron, etc.
Enemies in Skyrim look to be much more varied in size and strength. In Fallout:NV Deathclaws were perhaps the hardest enemy to kill, the notorious Legendary Deathclaw among them. Creatures we remember might be Bighorners because they took laughably little damage and their heads always seemed to just pop off at the slightest pressure, Bloatflies and Cazadors which are becoming more on-par with each other due to the downgrade of the Cazador's DT rating and the shortening of it's detection range. Skyrim offers new creatures like Frost Trolls, Giants, Dragons, Ice Wraiths, and Giant Spiders, which only seems like a sampling of new distinct creatures. I said distrinct, there are zombies, skeletons, and probably ghosts, but raiders, marauders, bandits, they're in either game, marred by whatever combat system they use, with Skyrim (and Oblivion) both having the potential for more varied fights due to their range of weapons.
If one were to compare the games as wholes, it would ultimately boil down to one's personal experiences with each game. Since Skyrim isn't released yet, we can only compare it to TES4:Oblivion as a reference. Would you like Skyrim? If you like to play RPG's and you like getting immersed in a gameworld, keep a close eye on Skyrim as it comes out, because it'd have to be absolutely TERRIBLE to not beat Fallout:NV.
***Edit:
I've seen some comments on the inventory systems and leveling, so I'd like to also mention that Skyrim will compose a mixed leveling system, like Oblivion and Fallout.
Skyrim says that it will have a modified Skill system, where in you level any certain skill based on how you use it. However, I'm still a little unclear on how that affects your leveling. From what I understand, they won't make you level up ONLY major skills in order to level up, but then again, I am only interpreting what I've read.
The inventory system will remain largely unchanged, but perhaps you'll be able to carry more things in Skyrim, as in Oblivion, it was very easy to make it possible to carry more loot than any human should be able to right from the start. Where as unless you modded, Fallout can give you a total 250-300 weight limit. Oblivion gave us about that much to start with, and currently I can carry 600 pounds of weight.