If you need a quick brain break without the annoying sign-up screens,...

https://www.bust-bookmark.win/if-you-re-stuck-on-a-boring-train-ride-and-need-to-kill-ten-minutes-give

If you need a quick brain break without the annoying sign-up screens, Solitaire.org is my go-to. It loads instantly and offers a massive library of over 500 variants. I love that I can track my stats across sessions without creating an account