A source has told Eurogamer that CD Projekt Red will give away a "legendary" PC RPG for free on GOG.com this coming Thursday.
The giveaway takes place the same day as CD Projekt's Spring Conference, which will be live-streamed at 5pm GMT.
However, the giveaway isn't related to the "extraordinary" conference announcement which the company has been teasing for a long time now.
CD Projekt Red marketing head Michal Platkow-Gilewski told Eurogamer that it won't be a new game announcement.
"But to give you some hints and not to spoil the surprise, CD Projekt RED and GOG.com have prepared something very special for all the PC fans of The Witcher 2 Assassins of Kings, who already have the game, as well as for all those who will buy one any time in the future.
"It is something really unique," he added. "More to come on the conference."
All will be revealed come April 5.