Nier Cheats :
Secret - Easy Money
First you will need to have your harvest area in front of Yonah's house available. To do that you will have to complete a quest from the first shop area, it's the woman in the blue dress sitting on a bench under a tree on the right hand side. You won't be able to do do the quest right away, I think its a couple hours into the game. After you complete the first quest from her, you should immediately do the second one to unlock the rest of your harvest area.
Once you have your harvest area available, go to the second village (south of the beginning shop and along the path, you should know where it is by now) to buy 15x rice plant seedlings, then buy 15x bounty fertilizer from the item shopkeeper.
Go back to Yonah's house and use the bounty fertilizer on all 15 harvest spots, then plant a rice seedling on every spot, then water every spot. After you've done that, save the game. Quit the game and go back to PS3 main menu, go into your clock and time settings, change your (ps3) date by 1 day, then load the game. All your stuff should be grown, you usually make around 90,000-100,000 every time you do this.
Unlockable - Alternate Endings
There are four alternate endings, after beating the game you will get the chance to save, you can load up that save to start again from the second half of the game. The second playthrough provides many additional story scenes not seen in the first and the third playthrough provides you with the option of endings C and D, or ending B again if you fail to meet the criteria for those endings. Beware that getting ending D will delete all of your save data except the game's system data (the settings save file, not the actual install data) and when creating a new game if you try to name the protagonist the same name you did in your previous game you will be told "Unfortunately, that name cannot be used."