> I bought Project Hedra here. Do I get a Steam key?
Yes, if you bought the game then you will receive one via email when the game is released. If you donated, then it depends on the amount since there is a threshold.
> I bought Project Hedra here. I'd like the download please.
You want to download the demo? It's not avaiable yet. Since you bought the game I want to let you know that I'll be doing a closed beta before steam and you might be interested in that. If so contact me on discord and send me the email you used to buy the game.