If you install a repack that uses an “alternative” crack (like a cracked .exe from 2011), you will be able to use the Dragon Age 2 Mod Manager or install .dazip files properly.
Here is everything you need to know about Dragon Age 2 repacks, why they exist, and what to watch out for. In the PC gaming world, a "repack" isn't a mod or a patch. It is a compressed, re-packaged version of a game installer. Scene groups take the original game files (often from a disc or digital storefront), remove unnecessary languages, compress audio/video, and bundle it into a much smaller download.
For Dragon Age 2 , the original install size was roughly 7-8 GB. A high-quality repack can shrink that down to .
This is just the base game. You get the story of Hawke from Act 1 to Act 3, but you miss The Exiled Prince (Sebastian) and Legacy (the incredibly important lead-up to Dragon Age: Inquisition ). Avoid this version if you care about lore.