How to add blockland as a steam game to my steam list?

[Fz1906]

Since it's released on steam (according to this: http://store.steampowered.com/app/250340/?snr=1_7_15__13 )
And no, I don't want it as a non-steam shortcut
I tried entering my code
that didn't work
Any idea how to?

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https://blockland.us/steam-redeem.php

[Fz1906]

Thank you very much, have some free cookies and I'm locking...