If you need a quick brain break without the headache of account sign-ups, check...

https://www.save-bookmarks.win/if-you-re-stuck-on-a-slow-train-or-need-a-quick-mental-break-at-your-desk

If you need a quick brain break without the headache of account sign-ups, check out Solitaired. It is my go-to for instant, no-login play right in your browser. Whether you are killing time on the train or hiding from a spreadsheet, it loads in a flash