This is the 13608th most frequent Polish word.
planszowe
"Planszowe" means "board" in the context of board games.
The word 'planszowe' is an adjective describing 'gry,' indicating the type of games being referred to, specifically 'board games'.
W weekend gramy w gry planszowe z przyjaciółmi.
On the weekend, we play board games with friends.
Here, 'planszową' is the feminine singular accusative form of the adjective 'planszowy,' describing 'grę,' which is the noun for 'game'.
Kupiłem nową grę planszową na prezent dla mojego brata.
I bought a new board game as a gift for my brother.
In this case, 'planszowych' is the feminine plural instrumental form of the adjective 'planszowy,' describing 'gier,' the noun for 'games.'