Games already owned but non on steam

i can see the ga, soo a tag can help me to not enter for a games i already own (but i don't have on steam)

If you hide a giveaway, the 'eye' icon doesn't show up in the top-center of the giveaway when it's in a train. Just make sure to glance up before entering.

A long time ago, in a galaxy far far away, we were able to giveaway 2 games not available on Steam (Minecraft and Battlefield 3), which was cool but the problem was the fact that we could know if:

• The user didn't have the game already
• The GA creator had the game to giveaway
• The gifting itself took place
• The game was activated on the winner's account
• Maybe something else, I dunno

So many things we weren't able to know, so I guess the site stopped giving you the option for games outside steam (or at least that's what I think happened, I'm too old to remember most things)