I won the game I already have and revealed the key

Thanks, I hope I won't be suspended

I bought it from another source, can't refund.

No. You cannot create a giveaway with a key you've won on a giveaway here.

Even if you could you shouldn't. If you already own a game you win the proper way is like thoughtfulhippo said. Inform the creator and ask for a re-roll preferentially before viewing the key.

You can get suspended for doing something like that on SG. You need to take a few minutes to read the FAQ and Guidelines.

happy cake day

happy cakeday!

You can check that for yourself: "An icon with an eye will appear next to the key once it has been viewed by the winner."

It's hard though sometimes if the winner has 3k+ games in their library. Compare2steam no longer works so you have to just wait for Steam to stop breaking. Do you have any tips for a better website to use?

Yeah, but this time it wouldn't work. I was dumb enough to buy game AFTER I won it here... I just needed to click the tab in browser, but instead I bought the game and did it outside steam, so I can't return. Best deal ever.