[NicoJuicy]

I build the biggest Pokemon Go community in Belgium within 2 months, started 1 week before it launched ( to test Facebook ads), a long time ago by now.

I'd say Facebook ads is too expensive for a not hyped term ( we had / 10 the normal costs because of the hype).

Some giveaways grew it together with a lot! of content ( advertised) planned out ( i usually checked Sunday for content for the next week).

Starting earlier than others on fb was a pro too.

Finding good/interesting content was relatively easy.

It's not easy, cheap and very time consuming though.

A like doesn't mean they would join an event ( we had about 100-200 participants for events with entrance tickets for theme parks)