From April 2020 Humble Choice. Sensualshakti's ever useful forum posts does mention a region lock for this one.

But its becoming more and more frustrating when I go through my stockpile of keys from bundles, giveaways, trading etc and have to slog through to find region lock info. More and more bundles are saying they're locked including Humble Monthly titles. Plus, no matter how many guides I read I can't seem to grasp how to use steamdb and figure out where my key belongs to, whatever ROW means, and its just a stressful, time consuming process. And I'm sure someone is gonna read this like "It's easy just do X, then Y, and that's it." and you're probably right. The problem lies in my inability to parse the info.

Anyways, I thought I had more groups to do giveaways for but my months long streak to build-up keys looks to have likely removed me from most. But that has always been the case. I just don't have time to be here frequently enough to get into like groups and forum stuff. Sorry to whomever any region lock excludes. I hope any giveaway is better than giving up and doing no giveaways. I'll send out keys on my Friday lunch break but a lot of giveaways will be ending at once so bear with me. Sometimes I get messages within 10 minutes of a giveaway ending here and on Steam for the key. Please don't do that, any I can't get to at lunch will go out just as soon as I get home and walk my doggo.

Redeem when you can, play whenever you have time. Try not to die from the rona, the riots, and whatever the fuck else happens in June.