■Easy Operation Easy operation with just one finger! Just move the guns to the case. When an enemy appears, tap it to defeat it! ■Place guns in the case Let's put guns in the case neatly. Let's think about the arrangement so that you can put a lot of guns in the case! ■Let's make guns stronger and defeat enemies Merging the same gun makes the gun stronger. Let's merge various guns and advance the battle to an advantage!