3DS vs DS comparison:
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fdsmedia.ign.com%2Fds%2Fimage%2Farticle%2F109%2F1099732%2Fe3-2010-ds-vs-3ds-the-flattened-visual-comparison-20100617065255234.jpg&hash=73b93c7b49f016d6f40ccb6a1c071822)
3DS
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fdsmedia.ign.com%2Fds%2Fimage%2Farticle%2F109%2F1099732%2Fe3-2010-ds-vs-3ds-the-flattened-visual-comparison-20100617065300171.jpg&hash=6e8a57889af7c3d06f375ea57607a9c4)
DS
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fdsmedia.ign.com%2Fds%2Fimage%2Farticle%2F109%2F1099732%2Fe3-2010-ds-vs-3ds-the-flattened-visual-comparison-20100617065310140.jpg&hash=98af4e775acb9efe0480e209a5869116)
Comparison
Source: http://ds.ign.com/articles/109/1099732p1.html