Is it this site: https://nebulas.sfwa.org/?
If it is, as I see I can just register and nominate my game, even that it has a price.
EDIT: Very important - can those who live outside of USA participate?
Any game is eligible so long as it was “published and available to the public” during 2019.
That is the site for the Nebula awards, but I think you’re misunderstanding. What you are registering for on that site is for the annual Nebula conference, essentially a 3-day writing conference attended mostly by SFWA members. You don’t have to attend the conference for your game to be eligible.
As I said in my initial post, the Nebulas work a little differently from other game awards. You don’t have to apply or register in order for your game to be eligible. This means there is no way to “submit” or “nominate” your own game.
However, because this is only the second year that game writing has been a category, and not many SFWA members keep tabs on new game releases, I have been contacting game writers and publishers and asking them for information about their game, as well as electronic review copies or download keys. I am posting this information to our secured member forum, which only SFWA members can access.
If you would like me to share information about your game, or if you would like to provide keys, you can email me or the Nebula Award Commissioner with the relevant information and one of us will post it to the forum.