RockmanCosmo
@rockmancosmo.bsky.social
Game preservationist who specializes in Japanese feature phone (keitai) games.
https://rockmancosmo.weebly.com/
https://rockmancosmo.weebly.com/
You can play this English patch via Keitai World Launcher!
keitaiarchive.org/downloads.html
keitaiarchive.org/downloads.html
November 10, 2025 at 11:02 PM
You can play this English patch via Keitai World Launcher!
keitaiarchive.org/downloads.html
keitaiarchive.org/downloads.html
Thanks to @aid1043.bsky.social and Penguinstrain, Columns Jewel has an English patch! This was a #Columns keitai game that was preserved last year. It has a story mode, where Sana travels back in time after wearing a mysterious bracelet. There's also a puzzle mode with 40 puzzles!
November 10, 2025 at 11:02 PM
Thanks to @aid1043.bsky.social and Penguinstrain, Columns Jewel has an English patch! This was a #Columns keitai game that was preserved last year. It has a story mode, where Sana travels back in time after wearing a mysterious bracelet. There's also a puzzle mode with 40 puzzles!
It just dawned on me that this game is literally this gif
November 4, 2025 at 12:57 AM
It just dawned on me that this game is literally this gif
We've found plenty of keitai freeware games, but "Super Merio" has shown up on multiple devices. As the name suggests, it's a Mario clone. Released in 2001, it's one of the earliest pieces of keitai freeware that we've preserved. It has two sequels (?) and even a spinoff called "Dr. Merio."
November 4, 2025 at 12:31 AM
We've found plenty of keitai freeware games, but "Super Merio" has shown up on multiple devices. As the name suggests, it's a Mario clone. Released in 2001, it's one of the earliest pieces of keitai freeware that we've preserved. It has two sequels (?) and even a spinoff called "Dr. Merio."
Gameplay of THE Skydiving, a keitai game released in 2009. This was preserved by LNRC earlier this month. You try to skydive to the ground as fast as possible, dodging missiles and passing through fellow skydivers in the process!
October 29, 2025 at 11:57 PM
Gameplay of THE Skydiving, a keitai game released in 2009. This was preserved by LNRC earlier this month. You try to skydive to the ground as fast as possible, dodging missiles and passing through fellow skydivers in the process!
Cuebus preserved DoDonPuchi Zero (ドドンプチ零) and a trial version of DoDonPuchi (ドドンプチ)! Released in 2003, DoDonPuchi Zero was CAVE's first original shooter for keitai. Both were lost to time until now! DoDonPuchi Zero's soundtrack was composed by Namiki Manabu.
October 27, 2025 at 10:09 PM
Cuebus preserved DoDonPuchi Zero (ドドンプチ零) and a trial version of DoDonPuchi (ドドンプチ)! Released in 2003, DoDonPuchi Zero was CAVE's first original shooter for keitai. Both were lost to time until now! DoDonPuchi Zero's soundtrack was composed by Namiki Manabu.
Biohazard: The Episodes was preserved by @yuvi.app! Lost to time until today, this mission-based game was based on Biohazard 3. It appears to be the full game, minus extra characters. We have now preserved at least partial copies of all three keitai-exclusive 3D #Biohazard games!
October 17, 2025 at 5:41 PM
Biohazard: The Episodes was preserved by @yuvi.app! Lost to time until today, this mission-based game was based on Biohazard 3. It appears to be the full game, minus extra characters. We have now preserved at least partial copies of all three keitai-exclusive 3D #Biohazard games!
ICYMI, after 7 months of work, @aid1043.bsky.social finished their English translation patch for all eight Kingdom Hearts Mobile keitai minigames! Preserved last year, this patch even contains recreations of cut content, like bonus puzzles and downloadable cards! (Video credit to Aid)
October 8, 2025 at 6:18 PM
ICYMI, after 7 months of work, @aid1043.bsky.social finished their English translation patch for all eight Kingdom Hearts Mobile keitai minigames! Preserved last year, this patch even contains recreations of cut content, like bonus puzzles and downloadable cards! (Video credit to Aid)
Dokodemo Dodgeball Fantasia (どこでもドッジボ−ルファンタジア) was a dodgeball RPG released for keitai in 2006. Yes, you read that right! It's got a coming-of-age story and a real time battle system. We preserved this game earlier this year, and it's incredibly unique.
October 6, 2025 at 10:49 PM
Dokodemo Dodgeball Fantasia (どこでもドッジボ−ルファンタジア) was a dodgeball RPG released for keitai in 2006. Yes, you read that right! It's got a coming-of-age story and a real time battle system. We preserved this game earlier this year, and it's incredibly unique.
R.O.B. - Ride on the Beat!! was preserved by @yuvi.app! Released in 2005 for keitai, this is a 3D rhythm game where you ride a hoverboard and change lanes to the beat of the music. It's pretty fun! The 3D graphics are also quite good for a 2005 keitai game.
October 2, 2025 at 6:06 PM
R.O.B. - Ride on the Beat!! was preserved by @yuvi.app! Released in 2005 for keitai, this is a 3D rhythm game where you ride a hoverboard and change lanes to the beat of the music. It's pretty fun! The 3D graphics are also quite good for a 2005 keitai game.
Finally, Keitai Archive has a comprehensive FAQ with further clarification about our mission, including our non-profit intentions (we do not accept monetary donations) and forms for takedown requests. Thank you for continuing to support keitai game preservation! (6/6)
October 1, 2025 at 6:16 PM
Finally, Keitai Archive has a comprehensive FAQ with further clarification about our mission, including our non-profit intentions (we do not accept monetary donations) and forms for takedown requests. Thank you for continuing to support keitai game preservation! (6/6)
Second, Keitai Archive will have a quarterly-updating archive.org repo of abandonware keitai games and media. Newly-preserved games will still be accessible through Keitai World Launcher. You can find this repo here: archive.org/details/@kei... (3/6)
October 1, 2025 at 6:16 PM
Second, Keitai Archive will have a quarterly-updating archive.org repo of abandonware keitai games and media. Newly-preserved games will still be accessible through Keitai World Launcher. You can find this repo here: archive.org/details/@kei... (3/6)
First, Keitai Archive aims to have a GitHub repo for the tools used in keitai game preservation work. This includes file system extraction, file conversion, and other tools to access media on Japanese feature phones. This repo is a WIP, but we are actively working on it. (2/6)
October 1, 2025 at 6:16 PM
First, Keitai Archive aims to have a GitHub repo for the tools used in keitai game preservation work. This includes file system extraction, file conversion, and other tools to access media on Japanese feature phones. This repo is a WIP, but we are actively working on it. (2/6)
Introducing @keitaiarchive.bsky.social, a website for Japanese feature phone game preservation resources. As keitai game preservation grows, we want our tools and preserved abandonware media to be as accessible as possible. Read on for more information! (1/6)
October 1, 2025 at 6:16 PM
Introducing @keitaiarchive.bsky.social, a website for Japanese feature phone game preservation resources. As keitai game preservation grows, we want our tools and preserved abandonware media to be as accessible as possible. Read on for more information! (1/6)
Cuebus and I preserved Konami Wai Wai Sōkoban (コナミワイワイ倉庫番), a keitai-exclusive #Konami puzzle game! It features characters from various Konami games. A year ago, I found the phone that this game originated on, but the screen was broken. Cuebus managed to dump it today.
September 26, 2025 at 6:33 PM
Cuebus and I preserved Konami Wai Wai Sōkoban (コナミワイワイ倉庫番), a keitai-exclusive #Konami puzzle game! It features characters from various Konami games. A year ago, I found the phone that this game originated on, but the screen was broken. Cuebus managed to dump it today.
Thanks to Cuebus's chipoff dump of the 911T, the trial version of Armored Core Mobile 3 has been preserved! This is the SoftBank Yahoo Keitai version. Preloaded on the 911T, #ArmoredCore Mobile 3's trial lets you play through a few missions.
(Video credit: @XLeonier)
(Video credit: @XLeonier)
September 23, 2025 at 4:11 PM
Thanks to Cuebus's chipoff dump of the 911T, the trial version of Armored Core Mobile 3 has been preserved! This is the SoftBank Yahoo Keitai version. Preloaded on the 911T, #ArmoredCore Mobile 3's trial lets you play through a few missions.
(Video credit: @XLeonier)
(Video credit: @XLeonier)
DoDonPachi DaiOuJou DX Reco.ver (大往生DX-ﾚｺver.-) was preserved by Yuuku! Only sold on December 30, 2007, this is a score competition variant of DoDonPachi DaiOuJou DX. Given how it was only available for one day, this may be one of the rarest i-mode games preserved so far.
September 10, 2025 at 5:23 PM
DoDonPachi DaiOuJou DX Reco.ver (大往生DX-ﾚｺver.-) was preserved by Yuuku! Only sold on December 30, 2007, this is a score competition variant of DoDonPachi DaiOuJou DX. Given how it was only available for one day, this may be one of the rarest i-mode games preserved so far.
The original i-mode release of #Bomberman 3D was preserved by @yuvi.app! Released in 2004, the game has fully 3D stages with multiple elevations. Its EZweb, Yahoo Keitai, and international J2ME releases have also been preserved to various extents.
September 1, 2025 at 5:33 PM
The original i-mode release of #Bomberman 3D was preserved by @yuvi.app! Released in 2004, the game has fully 3D stages with multiple elevations. Its EZweb, Yahoo Keitai, and international J2ME releases have also been preserved to various extents.
Hey! Yeah, feel free to use it on here! If you want to play around with them (and all the other chara-den we've preserved), you can access them through Keitai World Launcher! keitaiarchive.org/downloads.html
September 1, 2025 at 12:22 AM
Hey! Yeah, feel free to use it on here! If you want to play around with them (and all the other chara-den we've preserved), you can access them through Keitai World Launcher! keitaiarchive.org/downloads.html
ICYMI, @yuvi.app partially preserved Biohazard: The Operations, a previously-lost Biohazard keitai game! It heavily relied on missing SD card data, but Yuvi painstakingly recreated the data from scratch, resulting in all missions and online leaderboards being functional! (1/2)
August 28, 2025 at 6:17 PM
ICYMI, @yuvi.app partially preserved Biohazard: The Operations, a previously-lost Biohazard keitai game! It heavily relied on missing SD card data, but Yuvi painstakingly recreated the data from scratch, resulting in all missions and online leaderboards being functional! (1/2)
Cuebus and @yuvi.app preserved Space Invaders x Pac Man! Available for only a month in 2005, this crossover game was exclusive to i-mode and lost to time until today! The Pac Man ghosts are replaced with Space Invader enemies, among other minor changes.
August 27, 2025 at 4:12 PM
Cuebus and @yuvi.app preserved Space Invaders x Pac Man! Available for only a month in 2005, this crossover game was exclusive to i-mode and lost to time until today! The Pac Man ghosts are replaced with Space Invader enemies, among other minor changes.
Yuuku preserved Mushihimesama Gaiden (虫姫さま外伝), a keitai-exclusive spinoff of CAVE's #Mushihimesama series! You walk around and throw bombs at enemies, which is a departure from CAVE's usual bullet hell shooters.
August 25, 2025 at 5:02 PM
Yuuku preserved Mushihimesama Gaiden (虫姫さま外伝), a keitai-exclusive spinoff of CAVE's #Mushihimesama series! You walk around and throw bombs at enemies, which is a departure from CAVE's usual bullet hell shooters.
All four chapters of Corpse Party: NewChapter were preserved by Yuuku! Released from 2006 to 2007, it is a keitai-exclusive remake of the original PC-98 game. Despite being canceled before its fifth chapter, this previously-lost game served as a base for future #CorpseParty ports.
August 22, 2025 at 5:29 PM
All four chapters of Corpse Party: NewChapter were preserved by Yuuku! Released from 2006 to 2007, it is a keitai-exclusive remake of the original PC-98 game. Despite being canceled before its fifth chapter, this previously-lost game served as a base for future #CorpseParty ports.
To try this game and other preserved keitai games, check out Keitai World Launcher!
keitaiarchive.org/downloads.html
keitaiarchive.org/downloads.html
August 21, 2025 at 8:03 PM
To try this game and other preserved keitai games, check out Keitai World Launcher!
keitaiarchive.org/downloads.html
keitaiarchive.org/downloads.html