IGN: The story of the GB Micro hardware itself is pretty told with just the screen, the few face buttons, and the cart slot. There's little else to this lil' bad boy. There's a proper headphone jack at the bottom of the system (take that, GBA SP!), and the plug is far enough out of the way for the cord jack to not get in your way when you're playing games. On the other hand, instead of a Link Port, there is just an EXT port up top for plugging in the power adapter -- it's a different plug from that of the SP as well, so you'll need both plugged into your power strip for charging. The volume is handled with tiny buttons on the side (which, again, don't get in your way, and are nicely difficult to hit by accident), and by holding the L-trigger, you can crank the brightness up. The system has a small single speaker in the bottom right corner, which is decent on a system this size, but isn't the ideal way to listen to your GBA games -- the speaker is tinny in quality, and the volume is lower than the SP. There isn't a battery light, but the Micro does the SP and GBA one better on that -- the Select and Start buttons light up in two-tone colors, glowing at start-up (or while plugged in) with a blue light to show when there's enough charge and going red when the system is almost dead. The light will be off usually when you play, to further save battery. There's also a keychain slot on the side -- and for once, we have a system small enough to actually make sense as a keychain.

Kotaku: I still think the $100 price tag is a bit much, but overall I'm impressed with this device. I'd have to think a bit about plunking down $100 for a Micro when I already own a DS and GBA SP, but I wouldn't give it a second thought if it were a tad cheaper. While the Micro only really changes the form factor of the GBA SP, the change is enough to make me want to spend the money for this step up. Holding the Micro in my hand and playing games with it, you really get a sense that you could take it anywhere and play discretely on a device that won't garner a lot of attention unless you want it to.