In Southern California girls were much more straightforward; didn't experience a single game or **** test while I lived out there. Granted that was at an expensive private college where most of the students came from 2 parent households, there was 3:1 girl to guy ratio, and all of the girls were beautiful. The environment didn't permit much leeway for female ego-satisfaction.
So it depends. If a girl is the clubbing type, she's not playing hard to get, she's not being hot/cold; she's just with other guys and is using you for if you come up with an awesome invitation. If a girl is a social media queen, she's not playing hard to get, she's not being hot/cold; she's just with other guys and using you for attention. The only girls I give a pass to and'll pursue a little bit are the ones that are shy and socially awkward--they're the ones that'll be overthinking texts and trying not to appear anxious. Some girls are genuinely busy and go on long hiatuses from the SMP.
But you should always assume a girl is getting it from somewhere else. Default to soft next--but I'll throw in some invites here and there. Sometimes they'll show up eventually and be genuinely high interest. When I had a hard next policy for girls who didn't show immediate high interest I ended up with a lot of Cluster B's. The key, I think, is just not to invest your thoughts, energy, or emotions into girls who are giving you nothing in return. But a simple invite text here and there? The girls will eventually sort themselves out and, if your ego isn't in the equation, you should be able to tell where you stand.