The Elder Scrolls IV: Oblivion is a stunningly gorgeous game, which will push even the highest spec gaming rig to its limits.
Oblivion's primary story line lasts only about 20-30 hours of game play, but that's not all that Oblivion is about. Oblivion is about exploring the environment which is huge. There are also Side quests strung about the map, as well as Guild quest which increase the amount of game play mission exponentially. If you have played any of the previous Elder Scrolls games the Character Classes/races should seem familiar, as will references to areas and occurrences in the previous games.
Oblivion is a large map, not as large as the previous games, but the level of detail in Oblivion is so much higher than any game before it, that the decrease in size can be overlooked. The visuals in the game are stunning, even when running at a lower detail level the game looks great.
Every NPC in the game has their own audio track, so the game is extremely immersive, however all the characters looks fairly similar during the conversation and dialog exchanges.
There are many character classes to choose from, as well as the ability to make your own class. There is an endless amount of spell to create and use. The sere level of content in the game is amazing.
First person Combat in the game is fun, and it is simple to bash in your enemy's with a large battle axe. Or snipe a Goblin with a bow and arrow. Also difficulty can be adjusted with a simple slider bar, so you can customize your experience.
There are feature to the game that I have trouble remembering them to post them, but be assured that Oblivion will waste many hours of you life. I highly recommend checking this game out on either of the Systems it's available on.