I got one of these knock-offs on ali baba and it works well. I tried a bunch of games on the 64 megabit smart card and they all work ok. Yes, there are a few minor graphics defects- Link kind of tears when he walks around in Zelda--but overall, it is amazing to be able to actually see the screen on a GBC in my favorite games! In darkness, the screen is even a little too bright. Does anyone else notice that the red power LED is bright as all hell? I put a piece of black electrical tape over it. But that LED is probably wasting 30mA, or about 1 to 2 % of the current in a 2400 mAh NIMH AA. (I don't know the true capacity of the batteries, but I'll bet it is less than what's scrawled on the side. Salesmans' mAh, LOL.) Then I noticed the Smart Card has a big bright green LED that lights up when you are using bank 2. Not too annoying since it's on the back, but there goes another 30+ mA.... So LEDs are wasting like 5% of the battery and they're annoying. That's assuming a BRAND NEW set of NiMH batteries. Nominally, the LEDs are probably drawing closer to 10%. What would be a good current-limiting resistor to replace them with? i.e. what is the resistance of a forward biased LED and will it mess anything up if I replace the LED with a larger resistance?