Conclusion of awesome gameplay (5)
I believe the answer is:
omega
'conclusion' is the definition.
(omega is a kind of conclusion)
'of awesome gameplay' is the wordplay.
'of' indicates the answer is hidden within the clue.
'OMEGA' can be found hidden inside 'awesome gameplay'.
(Other definitions for omega that I've seen before include "Traditional story" , "Greek character symbolizing resistance" , "symbol of resistance?" , "Greek finalist" , "Final outcome" .)