All Steam keys from what I can see. I have a code but It didn’t work for me; Could be I didn’t spend enough But you can try it…AUTUMN15
https://www.greenmangaming.com/titles/batman/
Some of the games are 50 Cents US:
https://www.greenmangaming.com/games/lego-batman-the-videogame/
https://www.greenmangaming.com/games/batman-arkham-asylum-game-of-the-year/
https://www.greenmangaming.com/games/injustice-gods-among-us-ultimate-edition/
Also have some bundles you can check out(Not Batman):