From the back cover:
"Change the fate of the world through courage and wisdom.
Customize your team members and engage in strategic tactical combat.
A legendary adventure to uncover the secrets behind the powerful rune cannons.
Infuse the ground with the power of the elements to turn the tide of battle."
A tactical RPG set in the Suikoden world, Suikoden Tactics is a companion to Suikoden IV, encompassing the timeline of that game, and periods prior to and after its events.