If someone is good at creating games they could almost copy this game and make their version of this I would bet they would have a great following if so and that game would be popular if proven to not only be a One-And-Done like this game was
I would guess its not long time left until either rushing the completion or disappears of the grid and its get abandoned
EDIT: I certainly hope this isn't the case and its a phase and that the development will pick back up and release faster or more content each time