I have a small website and a Discord bot showing me and my friends' games and achievements. I get this data from the Steam "GetOwnedGames" API. Recently some of our games are missing from our respective game libraries.
In particular, I had wondered why this game wouldn't show up https://store.steampowered.com/app/1603980/If_On_A_Winters_Night_Four_Travelers/ when I added it but had forgotten about it for a while, thinking that it could be linked to the game being free and me not having started it. Since then I've played and got all the achievements on this one https://store.steampowered.com/app/1683860/Eronoctosis_Put_Yourself_Together/ (probably NSFW) and this one too doesn't appear either. In both cases the game is free.
I use this URL : http://api.steampowered.com/IPlayerService/GetOwnedGames/v0001/?key=KEY&steamid=STEAMID&format=json and have checked that they really don't show up in the results using my own Steam ID.
Are there fellow users of this API, or any idea on this?
Thanks!
as mxmissile answer two years ago in the comment section. If you add the query param:
&include_played_free_games=1
The answer of the endpoint will include the free (f2p) games added to the account.
You can found the complete list here:
https://store.steampowered.com/search/?category1=998&genre=Free%20to%20Play