Browser game popularity was initially marketed on a different foundation I think. We're talking about the era of top vote websites but now marketing is based mostly around algorithms, or chance based on how much you'll pay for a percentage opportunity to get an ad viewed, and even then you are only hoping the person is not only interested but has the time and will power to do so.
On Google Play however it is easy to brand something retro so if the staff and some donors got together to put up some pixel/light graphics and have the nation stats and alliance affiliations linked or transferred to the app system and put on Play then you have something to brand as both text based and retro with some graphics to back it up. People love retro, it is it's own brand. Guaranteed 4 stars at least and I don't think you would need a reset at all. Just back it up when ready and transfer it over (nation/AA stats I mean but I'm not a Dev so idk)
The whole retro brand app theme brought Choose Your Own Adventure games back from the dead of the 80s for example. They're on gPlay right now. If you can't do better than that with a history like this then ... Well you know.