Pretty slick installation tricks. That's mucho annoying when games / apps "aren't available" on a certain device via the Play Store, but work completely fine once sideloaded. This was the case with Real Boxing; I saw it on the Play Store at one point on my Note 8, then I think it went on sale so I bought and installed it on my phone, but when I got around to putting it on my tablet, versions 1.x - 1.y where "incompatible", then once it hit 1.z it showed up for the Note 8 again.
Anyways, I wanted to check out XCOM on the big screen (bought it on my Note 3), so but I had the Playstore incompatibility and a lack of storage space on my tablet for the pretty-heavy obb file. I use the hell out of FolderMount to leverage space on my 64 GB external sd, so I first planned to send the game's TB from my Note 3 to the 8, import it, then mount the obb file on the extSD. No luck, not enough storage for the restore. So then I tried this: made an empty folder in sdcard0/Android/obb called com.tt2kgames.xcomeu, used FolderMount to mount that folder on extSD via the built-in file browser, made sure that folder was mounted, copied the game's apk and obb file onto my handy new 32 gig OTG flash drive (I got the Transcend one on Amazon... it's like half an in long and has a regular USB connection on one side and a micro usb with a cap on the other), installed the apk on the Note 8, then copied the obb file into the symlinked / mounted folder on the external micro sd, crossed my fingers, lost my grip on my tablet and dropped it, picked it up with a normal grip and launched the game... and it worked!
It plays pretty well on the Note 8 compared to the 3, just takes about 4x longer to load. I've never played this game on a different platform, or this type of gaming in general, but it's pretty fun. Definitely pretty impressive and no buyer's-remorse for dropping $10 on it. Probably would feel differently if I wasn't successful installing it on both of my devices though.