Are there any challenging, FREE, brain game sites out there?

There are free jigsaw puzzle aps.

I know. I see those on Nat Geo. I’m thinking of brain teasers.

Luminosity.

Yes, but after a while they want you to do a subscription. But I did enjoy the bit of time I got to play there.

It’s always been free for me. There are more brain teasers for money, but you can still use it daily for free.

I shall revisit. Thanks!

Dictionary.com has free brainy crap I like.

Well, there is the issue of that stuff not working. Also, this.

Hm. I wasn’t thinking it terms of becoming “smarter” or anything, so nothing needed to “work.” I just like playing games like that.