For me I searched āRPGā on google play, and downloaded the first 20 or so, set off for work which has no WiFi, and sat down to go through the new downloads, the ones that needed WiFi got uninstalled straight away ( roughly 80% ). Kept the games that played offline, took tablet back home at end of day and did the same thing, downloaded another 20 and tried them out at work, uninstalling all the ones that needed to be online.
Once I had a tablet full of games playable offline, I gave each game an hours worth of play time, again uninstalling the ones that I did not like, or the ones which were not in English.
DQ instantly ticked all the right boxes for me, so much so, that I did not bother to play test the remainder of the other games!
I would like to echo what ichsanization said, annoying pop ups, really do turn me off, I would actively avoid a game, that tries to force itself on me, I donāt care if its the greatest game in the world, once its tried aggressively to be seen via a pop up, its on my shitlist. I will search for games, and read reviews, but at the time I want to do it, I donāt want the hassle of an intrusive pop up.
Also on the same line as pop ups, I really do detest, games that force you to download and play other games by the same team, in order to progress in the first game. If I want to check out other games released by the same team, I will search for them in my own time, and not be dictated to do so.
Adverising that works best on me, is word of mouth or recommendations from friends or guild members in other games. Social media like FB sparks my interest, giving me the urge to read up on and research what I have just seen. Perhaps Iām the wrong person to comment on advertising as Iām in the wrong age group, I tend to stick to well established social media, that has been around for some time, the younger generation seem to be raving about a new site or app every other day, and to be honest, I simply cannot be bothered to go through the mind numbing registration B/S, for yet another site/app that probably has a shelf life of a couple of days until the next pop culture app springs up, and becomes flavour of the month, but saying that, they probably would be the best way to attract a larger player base. (Back in my day, all we had was BBSās, and then AOL, MSN and Yahoo messengers became the upgrade, not forgetting the innovative ICQ) 
Again to echo ichsanization, youtube is great, especially any of the online reviewers with large follower numbers, get some of them to check out DQ, or utilise things like TwitchTV, but break the cookie cutter " hey, watch me play this game " mould, you guys are actually producing a game, so incorporate that into the channel, have some footage of the artist doing his stuff, or you guys chilling in the office playing mortal kombat, or every now and then give the viewers a sneek preview of an upcoming patch or some future content.