I'm a NA user but I have a EU account. But if I bought and downloaded a game in the EU PSN store using a EU psn card. Will the game still work on my NA console? I have downloaded demos from the EU psn store that seemed to work fine. But I just want to be absolutely sure before I do this.
Nationality of the system doesn't play a role on what can you play on it; you can run an account of whichever nationality you want on it. Though do keep in mind, digital content is tied to the account so if for some reason you switch to a different account, the contents of the previous account won't be available to you until you sign back on~.