Downloading Build 25 is like dusting off an old NES cartridge. It is buggy, it crashes occasionally, and the features are limited compared to the modern game. You won't have cars, you won't have the detailed animation system, and the crafting menu will look primitive.
If Build 25 is not explicitly listed, it may be archived under the "Legacy" or "Older Version" branches. The Indie Stone occasionally rotates which extremely old builds are available for compatibility. Historical Context (The "Papers")