Can games purchased from a North American account be played on a Europe account?

I am from Europe and I bought something from Origin. What I've seen is that in the USA store the games are the same prices, but in dollars (which makes them cheaper, due o the exchange rate). If I make my purchase from the USA store (giving my account and credit card info to someone in the US) at a better price, can I download and play the game from my computer in Europe?

I think I can help you, I'm european too and I recently look through that

• First you should know that american price are most of time shown "before taxes" so by the time you checkout the price may have changed.
• Origin web store always redirect you to your own country store, but I guess you already figured that out + for international payement Origin will probably require strong payement verification method.
• There are a lot of better place to acquire cheap priced origin key. You should check www.allkeyshop.com
• Finally through allKeyShop I recently was able to buy Dead Space 3 Ltd. Edition for 28€ and it worked on my EU origin account. Note that incompatibility concerning region lock usually comes with Russian and Asian key. (except for MMO and Battle.net)

After all that I do think that origin american keys would work if accessed through Origin client with european IP adress.