For gaming shops in Penang, I would definitely recommend Beyond Electronics in Komtar.

It is situated exactly beside Ace Electronics old shop. The uncle there is a veteran in games scene, anything you can feel free to ask him. Provide good service as well, and has lots and lots of old games(PS1, PS2, Nintendo 64, ... ) until the latest in PS3 games. Also sell almost all console at reasonable price (can be negotiated also)

You guys should definitely check his shop out.

Full address : Beyond Electronics Tv Games. B2,Lot 18,Level 4,KOMTaR (Jalan Penang), Georgetown, Penang

These are few pictures of his shop (an old shop really, but OLD is GOLD)
https://foursquare.com/v/beyond-electronics...4b0102f0de4c16e

016-4885090. Support the uncle there! Can't see much of this type of veterans in the gaming scene in Penang already!

My personal recommendation for a good game shop in Penang is GameTag in Prangin Mall. It is located on the 1st floor (In front of Parkson Entrance).

The owner of the shop (Mr Yeoh +0124140307) is a nice fella. Able to negotiate and is very knowledgeable in this trade too. The shop is also very complete, ranging from limited edition boxsets to old 2nd hand PS2 consoles (fat and slim version) selling at cheap prices.

If you're looking for any gaming related items from the old to the new to the rare and limited (at reasonable prices and a nice boss), you couldn't go wrong with this shop.