Hey, sorry for the late reply. Gymkhana Racing really crushed my time in the last months, but now it's out.
For BPD!, 2017 Samsung A40 is the minimal device I use and only one.
I used assets from the Asset Store, exported everything in 3ds Max, created a single mesh for mobile optimization and re-textured almost everything in Adobe Painter and Photoshop. Then populated with props, created the collectables and everything else.
Same for the other game Gymkhana Racing:
https://play.google.com/store/apps/details?id=com.b06games.gymkhanaracingThere's a lot of work in terms of communication, looking for help, etc. I'm super happy that I'm now at a stage that I have most of the bottlenecks figured out and I'm starting to focus more on the creative side. I plan to release few more games with cars, bikes and game targeted for kids on non-racing theme.