Q: are games bundled with hardware like video cards acceptable for giveaways here

well if it redeems through steam account, it should be fine as long as it works

There's no Witcher 3 Redeem code to Steam. Every key goes to GoG.
The only way to get it on Steam is by purchasing at the Steam Store itself.

see this is why i ask. thank you guys. i thought it was steam because the arkham knight was through steam. thanks for the info, the link verifying information especially.