Game Boy Advance

Backward compatibility for Game Boy and Game Boy Color games is provided by a custom 4.194/8.388 MHz Z80-based coprocessor (Game Boy Advance software can use the audio tone generators to supplement the primary sound system), while a link port at the top of the unit allows it to be connected to other devices using a Game Link cable or GameCube link cable. When playing Game Boy or Game Boy Color games on the Game Boy Advance, the L and R buttons can be used to toggle between a stretched widescreen format (240×144) and the original screen ratio of the Game Boy (160×144). Game Boy games can be played using the same selectable color palettes as on the Game Boy Color. Every Nintendo handheld system following the release of the Game Boy Advance SP has included a built-in light and rechargeable battery.

Question: can game boy advance play game boy games
Answer: yes