REGFly wrote:Watching videos on gamebuino i saw some kind flickering in the screen and i wanted to ask is it because of the sceen or the speed of gamebuino?
I'd have to see the videos you're talking about but generally speaking there's no flicker unless you're trying to do grey scale (which is something the LCD wasn't designed to do in the first place). In any case the Gamebuino doesn't drive the LCD refresh circuitry directly, in theory you could draw something and then disconnect Gamebuino altogether and the LCD would happily carry on displaying the image.
REGFly wrote:Would i be able to put a ssd1306 128x64 if i was making a clone?
Sure! It supports both SPI and i2C so I can't think why you wouldn't be able to use it. You would need to modify the Gamebuino library graphics code though, the SSD1306 command set is different to the PCD8544 that Gamebuino uses.