Since I drop my smart phone for years, only three games I’m still have memory lane.
Fisrt of first, must be Killing Time At Lightspeed

Of course it has web browser or other version, but the best thing of this game that is you could play it on iPhone when you on a real air trip. It will be a stronly empathy with game after plane turn off lights, though in game you’re travelling like lightspeed much faster than a plane irl, but your situation will be same like the main character in game, this little yellow screen will be the only connection with a world that seems like it real exists, all the fake social contents will be very persuasive and touching you so much.
Noted: only play it on a air plane, other place with any wifi or 4G will ruined all the feeling.
and next Tower of furtune series


Great slot machine RPG games, the game itself on very few elements, but it will let you indulge in that addicted random. I can’t stop myself in this series (1-3).
8bit Doves

This is the very early game from Nitrome, not like later rogue-AD-games from them. It’s more nostalgia and skilful like classic on Gameboy. I’m not sure it’s whether supports latest iOS version or not. Oh! Game OST is also a thing deserve to listen.