Terrible Toybox and Epic Games announced it a few weeks ago, but it's worth a quick reminder now that the offer is actually in effect.
Thimbleweed Park can now be yours completely free on PC by visiting Epic Games Store and adding it to your library. The offer lasts until March 7, so you have plenty of time to do it. You probably won't be extremely disappointed if you visit the store the following day either though, as Slime Rancher will be the free game from March 7 - March 21. But if you haven't got Thimbleweed Park yet, there's absolutely no reason not to pick it up for free.
We think the selection of free games has been incredible thus far. How about you?