Is it normal for there to be a time where you feel like you have to play games?

I met this guy on a dating app and I like him fairly well. However his replies are getting shorter and he is replying less and less. From experience I know completely withdrawing and not texting for awhile will straighten him up but I don't know if I should have to do that. Are relationships about walking away when the effort starts diminishing? Is it normal for a point like this to come?

To be fair we aren't dating yet.

Is it normal for there to be a time where you feel like you have to play games?
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