The most common and most likely answer to this crossword clue is the 16 letter word FOLLOW-MY-LEADER
I've seen this crossword clue in The Guardian
F
O
L
L
O
W
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M
Y
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L
E
A
D
E
R
More clues leading to the result FOLLOW-MY-LEADER
Buddy explains!
The straight part
We know that "Game requiring action replays" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case game requiring action replays = follow-my-leader.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.