I loved To The Moon, which fits your requirements, I think. The sequels are fine, but the stories are pretty well standalone, so you could play just the first one and leave it at that. And it’s only £1.70.
I was ok with the Angry Birds franchise right up until the shitty kart racing game they pumped out. I don’t think I’ve ever seen a more wretched collection of bare-faced advertising and micro transactions as that fucking piece of shit.
The game was crammed full of new pop songs, and when one would play the game would display a link to buy it from iTunes. I couldn’t let my kid play it, it was just too egregious.
Haven’t touched any of those games since. Which is a shame, because I really enjoyed the original.
I remember buying Bioshock on my iPhone way back in the mists of time, before decent controller support existed for iOS. The on screen controls weren’t great, so I didn’t spend much time playing it, always planning to come back at some point.
Then it got removed from the App Store so completely that it disappeared from my purchased list, and that was that.
I ragequit half way through the final boss after having died for the thirtieth time. The game is absolutely beautiful, but fuck me some of it is tough.
Ended up watching the last bit on YouTube. No regrets.