Summon Night isn't the best role-playing experience ever created, but it still manages to be a fun time and one that you'll enjoy long after you're done playing it (literally, as there are two main characters to play as and a total of eight different paths through the game).
Summon Night: Swordcraft Story may not be the biggest, most revolutionary, or most challenging RPG ever to hit the GBA, but what it lacks in some areas it makes up for with plenty of fun, variety, and solid gameplay. [Sep 2006, p.82]
Let me put it simply; this is a fun game. It has a quickly developed plot with interesting characters and an exciting enough battle system that you'll never be bothered by the frequency of fights. However, it suffers from the curse of most great games; it's short.
While Summon Night has fairly intricate graphics, for the GBA anyway, the audio could have been better; it's reminiscent of the SNES era but it fails to fully live up to old standard. The storyline is somewhat lacking and a bit shallow.