Getting away using key — map is involved also (8)
I believe the answer is:
escapism
'getting away' is the definition.
(getting away or escaping from things)
'key map is involved also' is the wordplay.
'key' becomes 'esc' ('Escape' key on a computer keyboard).
'involved' is an anagram indicator (involved can mean confusing or complex).
'also' means one lot of letters go next to another.
'map'+'is'='mapis'
'mapis' is an anagram of 'apism'.
'esc'+'apism'='ESCAPISM'
'using' acts as a link.
(Other definitions for escapism that I've seen before include "break from reality" , "Preferring fantasy to the realities of life" , "Avoiding the actual" , "Avoiding life's realities by indulging in fantasies" , "Sim space (anag)" .)