| Puzzle Type | Caption | Source |
| JigZone | Apple tree | Microsoft Clip Art Gallery |
| Playtonium | Pine Trees Screen | Artist: Hasegawa Tohaku |
| JigZone | Solitary Tree | from Wikipedia by photographer Hansueli Krapf |
| Playtonium | The Gray Tree | Artist: Piet Mondrian |
| Playtonium | The Mulberry Tree | painted by Vincent Van Gogh |
| Playtonium | Tree of Life | Painting by Gustav Klimt |
| HTML5 | What's up here? | Wikimedia commons: böhringer friedrich |
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