For Android a hidden gem in terms of tts engines i have found is Sherpa-onnx. They have a page with pre-built apks here, if you can stomach finding your way in a huge list and looking for the specific architecture of your phone cpu. The voices that they offer are the best i have heard for an open source project. Still the are downsides. It is heavy on the hardware and will barely run on low end phones with long pauses between the phrases. Also you can only have installed one voice at a time. There is a huggingface space where you can try different voices in browser without installing anything here.
I can recommend 2 games.
The first is Dying Light, a first-person open-world parkour game with weapons based combat set in a quarantined city where a virus has transformed most inhabitants in zombies. What sets it apart, for me at least, is the parkour. It is one of the few games i have played where most of the time i refuse to fast travel because it is more fun to parkour my way to the objective through the zombie infested areas.
The second recommendation is The Messenger, an 8-bit platformer. The gameplay is good, the areas are well crafted and story is enjoying. The higlights here are the music and the relation dynamic between the main character and the shopkeeper. The person behind the sountrack is a genius when it comes to retro music. Most of the ost is straight bangers one after another. The game is oozing with passion and it pains me that so few people know about its existence.