https://www.gamespot.com/articles/free-steam-weekend-begins-for-three-games/1100-6458211/

Hope you're not doing much this weekend, PC gamers. Three noteworthy games are doing the free-to-play weekend thing on Steam. Better yet, they're also on sale, so you can try them for free and then buy them for cheap if you want more time with them. Not a bad deal.

Tom Clancy's Ghost Recon Wildlands is free to play on Steam--as well as PS4 and Xbox One--between April 12 - 15. The promotion coincides with Wildlands's first big Year 2 update. It's called Special Operation I, and it features a mission with Splinter Cell's Sam Fisher. The game is also 67% off ($20/£16)on Steam through April 18.