Colleen Atwood won Oscars for her work on Alice in Wonderland. For Through the Looking Glass, she went further. The DVD extra quality includes an interactive gallery where you can rotate 360-degree views of:

True to Alice’s puzzle-box nature, the DVD menu hides interactive secrets. On the main menu, pressing “left” when “Play Movie” is highlighted unlocks a blooper reel (rare for a fantasy film) featuring Mia Wasikowska laughing as Sacha Baron Cohen improvises in full Time costume.

There are nearly 20 minutes of deleted scenes that add significant depth:

These scenes are often in rough cut or near-final VFX quality, but they are essential for lore junkies.

To get the ultimate Alice Through the Looking Glass DVD extra quality, you need to know which SKU to hunt for on eBay or your local used media store.

Warning: Avoid the "Rental Version" DVDs. These often strip out the commentary and the second disc of special features entirely.

Alice Through the Looking Glass was a box office disappointment, but it is a classic case of a film misunderstood in its time. The themes of time, grief, and the inability to change the past resonate more deeply now than in 2016.

The DVD extra quality allows fans to reclaim the film. By watching the behind-the-scenes content, you realize the film is not a lazy cash grab but a labor of love. The cast (Johnny Depp, Anne Hathaway, Mia Wasikowska) were deeply committed. Depp, in the DVD featurettes, discusses playing the "Mad Hatter" as a man suffering from clinical depression and PTSD—a thematic layer the theatrical cut only hints at.

Furthermore, the "extra quality" often includes a "Visual Guide to Underland" map. This map connects the locations from the first film to the new zones in the sequel (the isolated tower of Time, the Abyss of the Dead, the Ravished Isle). For world-builders, this is gold.