mind game 
noun
A course of psychologically manipulative behaviour intended to discomfit another person or gain an advantage over them: I have been playing mind games to get him to invite us...
- I think it's a psychological mind game he's still going for the drivers' title.
- Tonight's State of Origin match between Queensland and New South Wales, for instance, is actually the culmination of a sophisticated mind game that's been going on for three weeks.
- This is not a name-naming game - but is it a mind game?
- not know which way (or where) to turn
- not least
- not let the grass grow under one's feet
- not-life
- not likely!
- not like the look (or sound) of
- not-living
- not long ago
- not-me
- not mince words (or one's words)
- not miss a trick
- not move a muscle
- not much chop
- not much cop
- not much in it
- not much (or a lot of) fun
- not nearly
- not necessarily
- not-ness
- notochord
- notochordal
- Notogaea
- Notogaean
- Notogea
- Notogean