Early versions required manually editing configuration files with AppIDs. Later versions (GreenLuma 2020, GreenLuma Reborn) became semi-automated, pulling lists of DLC IDs from community databases.
Because it is an unofficial tool distributed on forums and file-sharing sites, there is a high risk of downloading versions bundled with malware or keyloggers. Legal Issues: steam006 greenluma
A small subset of users defends GreenLuma as a preservation tool. When a game is delisted (e.g., Deadpool , Transformers: War for Cybertron ), GreenLuma allows owners who downloaded it before delisting to continue accessing it offline indefinitely. GreenLuma Reborn) became semi-automated
For multiple games, create separate files ( 1.txt , 2.txt , etc.). Transformers: War for Cybertron )