Type of clue featuring in extremely likeable game (8)
I believe the answer is:
lacrosse
'game' is the definition.
(lacrosse is a sport)
'type of clue featuring in extremely likeable' is the wordplay.
'type of clue' becomes 'across' (in a crossword).
'featuring in' indicates putting letters inside.
'extremely' suggests removing the centre (only the extremes of the word are used).
'likeable' with its centre removed is 'le'.
'across' placed within 'le' is 'LACROSSE'.
(Other definitions for lacrosse that I've seen before include "Score's uncertain after the Spanish" , "Sport played with sticks" , "Game played with netted sticks" , "Game played with nets on sticks" , "Ball game using netted stick" .)