Nintama Rantaro mobile games will shut down on December 16
Two Nintama Rantaro mobile games will close on December 16, with refunds available to eligible players through February 26, 2027.
Nintama Rantaro Futtobi Puzzle no Dan Again and Nintama Rantaro Mugen no Tsubo Dai Bosou no Dan will both shut down on December 16, 2026, according to publisher announcements reported by 4Gamer. The two mobile games are based on the long-running anime Nintama Rantaro (忍たま乱太郎), but they are separate titles with different launch histories. 1
The shutdowns are scheduled for 12 p.m. Japan time on December 16. Both games stopped accepting new paid content at 12 p.m. on October 28, the same day the announcements were published. Players who are eligible for refunds will be able to apply from the shutdown time until 11:59 a.m. on February 26, 2027. The refunds are scheduled to be paid between February 26 and March 19, 2027. 1
Two games, two different runs
Nintama Rantaro Futtobi Puzzle no Dan Again (「忍たま乱太郎 ふっとびパズル！の段 あげいん！」) is an action-puzzle game built around the anime's cast. It launched on January 28, 2026, meaning it will close before reaching its first anniversary. The official site presents a roster of familiar characters and a puzzle-focused adventure. 12
Nintama Rantaro Mugen no Tsubo Dai Bosou no Dan (「忍たま乱太郎 ムゲンのツボ大暴走の段」) is a separate puzzle game that asks players to collect the series' characters while clearing stages. It launched on October 24, 2022, giving it roughly four years online before the service ends. 13
The refund process requires account information. 4Gamer warns that players who cannot provide the necessary details may not be able to complete an application, so anyone affected should preserve their account records before the shutdown date. The publisher's notices are embedded in the original report, while the two official game sites confirm the titles and their promotional identities. 123
What this means
This is a service closure rather than a temporary maintenance notice. Once the December 16 deadline arrives, neither game will remain available as a live service, and the refund window will become the relevant next step for eligible players.
Our opinion
The frustrating part is the short life of Futtobi Puzzle no Dan Again: a game launched in January is being switched off before its first birthday. The four-year run of Mugen no Tsubo Dai Bosou no Dan is a different story, but the same refund deadline makes account preparation the practical priority for both communities. 1