In Decade Mode, the player follows Tsukasa Kadoya's journey through the nine Heisei Kamen Rider worlds as Kamen Rider Decade, fighting the other Riders and attempting to prevent the destruction of the worlds. Decade Mode differs from standard gameplay in that Decade's Form Change and Special Attacks are customizable with KamenRide Cards and Final FormRide Cards earned as the player progresses. The missions in the mode are divided by three levels, with the easiest missions can be played in Level 1 while the hardest can be found in Level 3. Level 2 and 3 can be unlocked as the player progress in Level 1.

In Decade Mode, the player follows Tsukasa Kadoya's journey through the nine Heisei Kamen Rider worlds as Kamen Rider Decade, fighting the other Riders and attempting to prevent the destruction of the worlds. Decade Mode differs from standard gameplay in that Decade's Form Change and Special Attacks are customizable with KamenRide Cards and Final FormRide Cards earned as the player progresses. The missions in the mode are divided by three levels, with the easiest missions can be played in Level 1 while the hardest can be found in Level 3. Level 2 and 3 can be unlocked as the player progress in Level 1.