Kindle FreeTime doesn't really offer much for limits except intended age but is similarly non-obnoxious.

I got Apple Arcade subscription for myself for the same reason. No ads, no pay to win mechanics, and some great games, too.

There are virtually no good games on Apple Arcade. Had it for a year, nothing but goofy cell-shaded 6 year old child's games with maybe three or four titles like Jetpack Joyride or Crossy Road to piggy back off. I can't imagine how an adult can enjoy what's in the Apple Arcade and I really gave it the benefit of the doubt.

Lego Builder’s Journey is an excellent game that can be enjoyed by adults.

https://apps.apple.com/ie/app/lego-builders-journey/id144163...

What the Golf is great fun for all ages.

https://apps.apple.com/ie/app/what-the-golf/id1415190483

Simon’s Cat is a fun puzzle game. Kids love the story and the puzzles are challenging enough to be enjoyed by adults.

https://apps.apple.com/ie/app/simons-cat-story-time/id153501...

Mini Motorways is sublime

https://apps.apple.com/ie/app/mini-motorways/id1453901000

Sneaky Sasquatch and Alba are fun RPG lite adventures that you can play with younger kids to help them navigate more complex game experiences.

https://apps.apple.com/ie/app/sneaky-sasquatch/id1098342019

https://apps.apple.com/ie/app/alba-a-wildlife-adventure/id15...

Assemble with Care is a lovely puzzle game about repairing with a nice narrative.

https://apps.apple.com/ie/app/assemble-with-care/id145049869...

There are more but most of these keep my kids coming back and it’s a way to engage with them that you don’t often get in other games.

Alto’s Adventure and Alto’s Odyssey are a nice duo for 5 minute breaks. Samorost series are old, but nice adventure games.

Mini Motorways and Mini Metro are nice tactical games to exercise the brain.

Fantasian is a fantastic game and has a great story.

Yes! I love Apple Arcade for this reason, too.

Especially because I only typically let them use it on the Apple TV and not a phone or iPad. They get to use a physical controller (DS4) and we can talk about their game as they play. So it’s less mindless and we can keep an eye on what they’re exposed to in game.