Nintendo rode its Game Boy Advance to great success in the early part of the 21st century, and the system is still going strong even in the wake of the Nintendo DS. Because it's an older but still viable handheld, the GBA has inspired an incredible array of accessories. Manufacturers have had years to think of ways to tweak the system and get more out of it, leading to a veritable banquet of upgrades for customers. Take note that the GBA is available in two designs, the wide, button-spaced original design and the compact, clamshell-equipped SP. Before you buy an accessory, double check to make sure it's compatible with your design of GBA.