Have a neat example of NES being stupid with its 8x8 pixel tiles, and its 16x16 pixel palette boundaries:
Particularly noticeable on the top row. Any palette region of a different palette than the textbox has its top half colored wrong after it appears because the textbox's top position is divisible by 8, but not 16.
(These are for dialogue boxes appearing/disappearing. Drew them over "random" colored blocks to make absolutely sure it restored the level underneath properly. I'd try to align it so this was less noticeable during the actual cutscenes, heh.)
Edit: Oh wow, just played your game Ellian. Hehehe, I guess I'm not spoiling. But uh... cute?
Edit2: Actually, one more thing. It's possible to stand in the air by walking off a ledge, then holding the direction toward the ledge:
http://i.imgur.com/R2CMNd3.pngI always feel weird about pointing out bugs in ludum dare games because of the small development time, but eh. Worth a mention if you ever decide to expand it.