A Steam Community announcement for Nuclear Throne players has word that they will soon each be receiving an additional copy of Vlambeer's early access roguelike-like that they can gift to a friend (thanks Polygon). Here's the plan for an instant population explosion in the game:

You've become really adept Nuclear Throne players, and we want to call upon you for your help. We need new players, people that are great players, that would love Nuclear Throne, and we need them to be part of our community. We're sure you know somebody like that, and if you do, we want to ask you to invite them to the Nuclear Throne community. We need fresh eyes on the game, people that will still get decimated by Big Bandit and that will complain about the ravens in the scrapyard. We need to know how they feel about Nuclear Throne, and we need your help to reach them.

So as a token of appreciation for your continued support, and as a way to grow the community for valuable feedback, we want to give every owner of Nuclear Throne by the end of the year (CET) a free, giftable copy of the game on January 1st. This is a one-time gift, and we're afraid we can't make any exceptions to that date, timezone or any other part of this due to logistics. Some terms and conditions apply because we had to have those logistically, and we'll spell those out in a blog post later. Either way, we hope you bring someone wonderful to the community for 2015.