That was over 8 years ago in 2013.
Today he is 24, and has starred in 18 movies in total, 7 since Ender's Game was released.
In Ender's Game, I think Asa Butterfield looks:
Ender's Game scores 6.5 out of 10 on The Movie Database.
Asa Butterfield's first acting role was as 'Andrew' in After Thomas, released in 2006 when he was 9.