Yes, there are no region lockouts on PS3 games.
No, 3DS games are region locked.
Yes, the Nintendo DS and DS games are not region locked.
Yes. To ones to watch out for are the "J"codes sold in Japan. They may not work.
NO, the 3DS have a region block, only American 3DS can play American games and only pal 3DS (from Europe) can play pal games and also only Japanese games can be played on a Japanese 3DS
If you bought them, you can play them.
No, the American games will not play in Ireland if your using the Ireland consolle but if you purchase the American console and take it to Ireland it will easily play all the games that you purchased is America ( the American console will not play the games the you purchased in Ireland) If you have more questions message me.
The Vita is not region locked. A system bought in one region will play physical games bought in any region. (US, Europe, Japan, Asia, Australia) Digital copies of games can only be played if the Playstation Network account that bought the game is linked to the system it is being played on.
nothing
Yes dear you can.
they play alot of computer games, like starcraft
Yes, PSP games are not region locked, though PSP movies are.
No. Wiis are locked depending on what region they are bought in. A US-bought Wii (i.e. NTSC) will not play games bought in Europe or Japan. (i.e. PAL) There is no way to get around this legally.