Tetris in an Edge favourite? Actually yes, this is a very playable Tetris clone, implemented in PWA form on a URL, see below for link and screenshots. True, the playing field is a little large and the gameplay doesn't speed up, but if a gentle puzzler and time waster is what you're after, then here we go.
Of course, you can turn this into an 'app' yourself with PAWA or just pin it 'as is' on your Start screen. Or just add it as a 'Favourite'. It's up to you. If you're confused by the different PWA options then check out my feature here.
Here's Tetra in action on my IDOL 4 Pro:
Touch instructions, which work well under Windows 10 Mobile. Innovatively, fire up this PWA in Edge on the Desktop and you get keyboard controls; (right) Tetra in action - it plays smoothly and is fun in a 'Zen' fashion and pace. It's not quite 'Atomic' though (my old Tetris clone for Symbian)!