Hello " WhoaMule", 

Indeed, the overheating is most likely linked to the high graphical load of the bowling game, combined with the greater sensitivity of mobile devices to this type of rendering. 3D or semi-3D games place significant demands on the processor (CPU) and graphics card (GPU), leading to increased temperatures. The general causes of overheating are well documented in the technical literature.

https://www.blog-united.com/smartphone-surchauffe-solutions-refroidir/

And indeed, enabling the lowest graphics settings can reduce the temperature, but at the expense of graphics quality.