i'm too new lol
In a nutshell, you can ask only available games and you need to be an active member of the community. The list is at the second post in this thread. First who asks gets the game.
And for being too new, that is quickly remedied. This giveaway is based on donations by other GOG community members. It is for GOG community members, by GOG community members. As such, you need to be an active member - at least for a month. So come and discuss games on the game specific forums or join fun forum games on General forums, in a month you will be eligible for games.
You can find me on Cyberpunk 2077, Fallout, The Witcher, Biomutant and many, many point-and-click game specific forums. Come say hi.