This app was mentioned in 9 comments, with an average of 1.00 upvote
I just sideloaded "OPR6.170623.019" with data and cache wipe. I went from full to 55% with 1h55m SoT and 40m of that was playing CSR2 in a 6 hour period so far. Wifi, bluetooth, and cell data have been on constantly, and I used google maps for about 15 min. For the first 10% drained I noticed "Android System" quickly jumped up in the list of battery usage, and they added an option to disable background processing for it, so I disabled it and it's been slow drain since. I can report back tomorrow with a non-heavy gaming day of use :)
CSR Racing 2 – Free Car Racing Game | 4.6 rating | Free with IAP | 10,000,000+ downloads | Search manually
> CSR Racing 2 – The next chapter of the drag racing game, now with AR mode! Setting a new standard in graphics for car games, CSR2 delivers hyper-real drag racing to the palm of your hand. ...
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It says it is on the google play store
https://play.google.com/store/apps/details?id=com.naturalmotion.customstreetracer2&hl=en
Not available on LG G3 :/