Nintendo GBA AGS Aging Test Cartridge – The Official Diagnostic Tool for Game Boy Advance & SP The AGS Aging Cartridge is Nintendo's own hardware diagnostic tool, used on the factory floor during GBA production and at Nintendo-authorized repair centres to verify that every unit leaving their hands was functioning correctly. It runs a comprehensive series of hardware tests designed to identify Custom cartridge, plug and play. Compatible: GBA, GBA SP, DS, DS Lite.