If you’re stuck on a slow train and need a quick mental break, give Solitaired...

https://www.paste-bookmarks.win/if-you-need-a-quick-brain-break-without-the-annoying-sign-up-screens

If you’re stuck on a slow train and need a quick mental break, give Solitaired a try. It is my favorite for fast, no-login play that gets you straight to the cards. The best part is the massive variety of games, so you never get bored