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-20100617065311702.jpg&hash=a8c27488b81f0e6b9f8c28cde70b626a)
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-20100617065301484.jpg&hash=641412eb4f7748aacec5324c12b47c4f)
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