The Elder Scrolls IV: Oblivion (XBOX 360)

Easy Money (June PrePatch Version)
After finishing the Imperial Prison Sewer tutorial at the beginning of the game, you will be able to kill certain people, and get an infinite amount of money. Here's where and with whom you can do it:
In the Imperial City, Talos District, find a house that belongs to a person named Dorian, which will be called Dorian's House. Try to make him angry enough by threatening him. When he has a very low opinion of you (under 20), he will ask you to leave. At this point, kill him and search his body. It should have about 40 denier, and other items. TAKE GOLD ONLY! When you do, he will react, asking you for the gold back. Make sure you don't run away or alert any guards, and save. After about an hour, of continuous conversations (you will have to press the appropriate button continuously), Dorian will have 150.000 denarii with him!
Easy money with a horse and a weapon!
To use this trick, you'll need a horse and wield the most expensive and most powerful weapon you own.
Take the most expensive weapon you own and handle it. Get on the horse and use the fast travel to go to Kvatch to talk to an orc merchant or to the Silver Road in Cyrodill and talk to the green-clad merchant.
Once in the trade screen, sell the weapon you have in your equipment. It won't go away, allowing you to resell it over and over and have a ton of money!
Doubling of items (Prepatch)
1) Equip any type of arrows.
2) While reloading your bow, press to go to the inventory screen.
3) Click on the arrows you have equipped with and then on any other set of arrows you own with.
4) Now find an object you want to clone and throw it away.
Permanent Effect of Springheel Jak's Boots
First of all, you must complete the Thieves Guild quests without destroying Springheel Jak's Boots. To do this, you simply have to finish the last quest without equipping them.
Go to the Shrine of the Sanguine and accept the quest that will be proposed to you. Do what it requires, and when you try to cast a spell, a guard will try to arrest you. Let it stop you (don't worry, all your gear is safe in one basket).
After the period of imprisonment, you will get all your equipment back, including the Boots. When you try to equip them, however, you will not succeed: the effect, however, you will get the same and definitively! You will now be able to equip any other pair of Boots.
Look through the walls
To see through any wall, you need a magic rod. Let it wear to zero, then stand in front of a wall, and walk against it and attack it. When you attack it, you will be able to see the other side! Ideal for caves and caves.
Unlimited Gold (Prepatch)
First of all, you will need to complete the Cure of Vampirism mission, and talk to Count Janus Hassidor. When you talk to him, ask him about the Reward, in the conversation options, but don't leave the conversation, and keep talking about the reward. Whenever you ask him, you will receive 1000 denier (or more, relative to your level). Ask when you want, so you will receive an unlimited amount of gold.