- Check out the new『Ninja Issen x Atomic Owl』bundle TODAY! - 19 May 2026
Hello, this is CFK. Today, we have joined forces with Monster Theater to bring the new『Ninja Issen x Atomic Owl』bundle! Seriously, look at how cool these games look. Wishlist them, buy the bundle, and review our games on Steam. About Ninja: Issen Ninja Issen invites players into a world filled with "hyper ninja action" as they work alone to annihilate waves of enemy troops using a variety of ninja skills and fight bosses coming at them with relentless, diverse attack patterns About Atomic Owl You are Hidalgo Bladewing, a bird with a beef. Hack, slash, platform, and soar through a beautifully chaotic pixel-art neonscape in your quest to save your feathered friends. Challenging retro-inspired platforming gameplay, transforming weapons, and fowl Ninja action await. Thank you for supporting pixel art games made with love!
- Ninja Issen 1.30 patch update + Nintendo Switch™ version released! 02/20/2025 - 20 February 2025
Hello from the team at CFK. Thank you so much for all of the interest and affection you've shown to hyper ninja action game Ninja Issen. Today (Feb 20th), alongside the release of version 1.30 of Ninja Issen to Steam, we would like to announce the good news regarding the official release of the Nintendo Switch version of the game! First of all, let's use today to share the details of the version 1.30 patch for Steam. ▶ Steam Cloud support For UMPC players, including those using the Steam Deck, patch 1.30 will allow saves to the Steam Cloud starting today. Now, you can continue where you left off in Ninja Issen no matter where you are. Go back and forth from PC and the Steam Deck to join Kiba's journey for revenge! ▶ Improved overall gameplay experience • The basic framerate of the game has been slightly improved. Enjoy the smoother, quicker action! • Based on player feedback, the level…
- Ninja Issen (忍者一閃) 1.25 patch notes (August 30, 2024) - 30 August 2024
Hello from the team at CFK. Thank you for all of the love and attention you've paid to hyper ninja action game Ninja Issen. In order to create a richer, smoother gaming experience for players, patch 1.25 will be released today (8/30) with the following changes: • Added the function for players to set keyboard action bindings. • (Stage 2) Fixed the bug that had players judged as falling through the map after turning back in certain areas. • (Stage 3) Fixed the bug that had certain areas of the map not reacting correctly. • Fixed many bugs and added various quality-of-life improvements. We hope you'll experience this smoother version of Ninja Issen for yourself, and thank you to all of the people who have played Ninja Issen and visited our community page. As always, thank you for your continued support as we at CFK strive to be the very best publisher we can be. Thank you.
- Ninja Issen (忍者一閃) to participate in the Anime Game Festival! - 27 August 2024
Hello from the team at CFK. We're happy to announce that hyper ninja action game Ninja Issen (忍者一閃) is officially going to be participating in the Anime Game Festival event! The Anime Game Festival is an online event where games combining animation aspects and gaming aspects from a multitude of genres are introduced to players everywhere, featuring everything from triple A to indie games from around the world. Running from August 27th to September 3rd, we're hoping you, the players, will show Ninja Issen (忍者一閃) all sorts of love at the Anime Game Festival! In addition, the Ninja Issen (忍者一閃) 1.20 patch is also releasing with the following changes: • The activation speed of some skills has been reduced. • Jump attack now allows for multiple hits. • HP and attack patterns of some enemies have been changed based on attack. • Unnecessary falling sections have been altered. • Added tutorial…
- Ninja Issen (忍者一閃) to make a surprise appearance at the INDIE Live Expo! - 24 May 2024
Hello from the team at CFK. Hyper ninja action game Ninja Issen (忍者一閃) to be featured at the INDIE Live Expo 2024, a program that introduces games to eager eyes from all around the globe! On May 25th, you will be able to catch Ninja Issen (忍者一閃) featured on YouTube and a number of other streaming platforms. Alongside their participation in the INDIE Live Expo, Ninja Issen (忍者一閃) will be holding a 35% discount on the game, so we hope gamers around the world will keep their eyes on the store page! As always, thank you for your continued support as we at CFK strive to be the very best publisher we can be. Thank you. 《 Steam 「Ninja Issen (忍者一閃)」 Official Launch Trailer 》 《 Ninja Issen (忍者一閃) official homepage 》 ▸ https://www.cfk.kr/ninjaissen/en/
- Ninja Issen (忍者一閃) 1.11 patch notes (May 23, 2024) - 22 May 2024
Hello from the team at CFK. Thank you for all of the love and attention you've paid to hyper ninja action game Ninja Issen. In order to create a richer, smoother gaming experience for players, patch 1.11 will be released today (5/23) with the following changes: • Fixed a bug where the chapter 2 battle zone wasn't triggering as usual • Fixed a bug so that the ending plays like normal • Improved text visibility issues for those playing on small screens • Fixed many bugs and added various quality-of-life improvements. We hope you'll experience this smoother version of Ninja Issen for yourself, and thank you to all of the people who have played Ninja Issen and visited our community page. As always, thank you for your continued support as we at CFK strive to be the very best publisher we can be. Thank you.
- As the cherry blossom petals fall, we've got a discount on Ninja Issen! - 14 March 2024
Hello from the team at CFK. Hyper ninja action game Ninja Issen coming at a discount like a warm Spring breeze! Get Ninja Issen at a 35% discount during the Steam Spring Sale 2024. In addition to the addition of a new passive skill on the 7th, players will be able to experience the improved gameplay for themselves with even more colorful action and quality-of-life gameplay tweaks! More information on the 1.10 update are as follows: https://store.steampowered.com/news/app/1714550/view/4137190132772695286?l=english As always, thank you for your continued support as we at CFK strive to be the very best publisher we can be. Thank you.
- Ninja Issen (忍者一閃) 1.10 patch notes (Mar 07, 2024) - 7 March 2024
Hello from the team at CFK. Thank you for all of the love and attention you've paid to hyper ninja action game Ninja Issen. In order to create a richer, smoother gaming experience for players, patch 1.10 will be released today (3/7) with the following changes: • Added the new passive skill Vanish (消 ). - Players can now deflect bullets without upgrading their Attack (斬) skill. - Added a description of this skill in Chapter 1. • Changed the color of some enemy bullets for players to be able to distinguish them more easily. • Sped up the teleport skill so that players can more easily see that it gives invulnerability frames. • Game difficulty has been adjusted in places. • Fixed many bugs and added various quality-of-life improvements. We hope you'll experience this smoother version of Ninja Issen for yourself, and thank you to all of the people who have played Ninja Issen and visited our…
- Ninja Issen (忍者一閃) takes the stage at 2024 Steam Pirates vs. Ninjas Fest! - 22 January 2024
Hello, this is CFK. Hyper ninja action game Ninja Issen (忍者一閃) will be participating in the 2024 Steam Pirates vs. Ninjas Fest! During the 2024 Steam Pirates vs. Ninjas Fest, experience all the pleasing action of cutting down your foes with a slice in the hyper ninja action that is Ninja Issen (忍者一閃) at a 30% discount. A new Hardcore mode was added to the game on the 18th of January (Thursday)! Test your limits after your first playthrough with some hardcore action, and experience the thrill and suspense of dodging the attacks of your strengthened opponents. We're always so thankful for the outpouring of support as we at CFK continue to strive to be the best publisher we can be. Thank you.
- Ninja Issen (忍者一閃) 1.09 patch notes (Jan 18, 2024) - 18 January 2024
Hello from the team at CFK. Thank you for all of the love and attention you've paid to hyper ninja action game Ninja Issen. In order to create a richer, smoother gaming experience for players, patch 1.09 will be released today (1/18) with the following changes: • Hardcore mode added. - This is a new challenge mode that can be enjoyed after clearing the game and starting a new game. - Dash through the entire game, from chapters 1 to 9, racking up both the highest score and the fastest cleartime! - Enemy attacks have become much more dangerous, and a single death means permanent game over. - In this mode, dialogue and game events do not appear. • Control explanation 'Tips' have been added. - These tips will allow players to better understand the game controls. - Upon acquiring a new skill, players will be able to better understand the specifics of that skill. - Players may now check impor…
- Ninja Issen (忍者一閃) 1.088 patch notes (Dec 26, 2023) - 26 December 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). To provide a smoother gameplay experience to players, patch version 1.088 will be released today (12/26) with the following changes: • Fixed game bugs and made various tweaks to improve game stability. We hope you experience the new and improved Ninja Issen (忍者一閃), and thank you to everyone who is playing Ninja Issen (忍者一閃) and visiting our community page. We're always so thankful for the outpouring of support as we at CFK continue to strive to be the best publisher we can be. Thank you.
- Ninja Issen (忍者一閃) 1.084 patch notes (Dec 12, 2023) - 12 December 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). To provide a smoother gameplay experience to players, patch version 1.084 will be released today (12/12) with the following changes: • Starting from this patch, if a player uses up all the time allotted for a battle zone, it'll be game over. • From the settings menu, players may now toggle the 'camera shake' feature that shakes the screen when landing attacks on enemies. • Players can now cancel out enemy projectiles with Kiba's shurikens. • Fixed many boss zone bugs and improved boss attack patterns. • Adjusted many game difficulty issues. • Adjusted the wording of the game over screen • Fixed other game bugs and made various quality-of-life improvements. We hope you experience the new and improved Ninja Issen (忍者一閃), and thank you to everyone who is playi…
- Ninja Issen (忍者一閃) 1.07 patch notes (Nov. 30, 2023) - 30 November 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). To provide a smoother gameplay experience to players, patch version 1.07 will be released today (11/30) with the following changes: • Fixed the bug where defeated enemies in certain areas wouldn't count normally. • Increased Kiba's jump duration and the number of attacks possible in the air. • Adjusted the boss stage designs to allow for smoother character movement and battle flow. • Added some quality-of-life improvements and fixed balance issues. We hope you experience the new and improved Ninja Issen (忍者一閃), and thank you to everyone who is playing Ninja Issen (忍者一閃) and visiting our community page. We're always so thankful for the outpouring of support as we at CFK continue to strive to be the best publisher we can be. Thank you.
- Ninja Issen (忍者一閃) 1.06 patch notes (Nov. 24, 2023) - 24 November 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). To provide a smoother gameplay experience to players, patch version 1.06 will be released today (11/24) with the following changes: • Kiba's attack hitbox has been improved in places. • Fixed the bug where some achievements wouldn't unlock. • Added some quality-of-life improvements and fixed balance issues. We hope you experience the new and improved Ninja Issen (忍者一閃), and thank you to everyone who is playing Ninja Issen (忍者一閃) and visiting our community page. We're always so thankful for the outpouring of support as we at CFK continue to strive to be the best publisher we can be. Thank you.
- Information on the official release of Ninja Issen (忍者一閃) - 23 November 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). Today (Nov. 23), Ninja Issen (忍者一閃) is finally available around the globe on the Steam store! This release is all thanks to the player interest and feedback we received during the demo release and our participation in Steam Next Fest, turning this project into a joint development effort. Let us take this opportunity to give a special thanks to all the gamers who have waited all this time. Download Ninja Issen (忍者一閃) now on Steam, and experience the hyper ninja action that sends you reeling between the past and the present! 《 Steam 「Ninja Issen (忍者一閃)」 Official Launch Trailer 》 On top of everything, it's thanks to the support of our players that Ninja Issen (忍者一閃) reached the number 2 spot among Popular Upcoming games on Steam, and number 1 in the action gen…
- Ninja Issen is a fast, furious cyberpunk platformer in the spirit of Shinobi, out today - 22 November 2023
If you are in the mood for a game about dancing around screens full of energy beams and projectiles, searching for that fleeting window of space in which you can stop and perform an attack, I recommend trying the demo for Ninja Issen. If you miss 8 or 16-bit platformers like Shinobi or the original Ninja Gaiden, I also recommend trying the demo for Ninja Issen. If you liked The Messenger - classique Ninja Gaiden's greatest heir - but wished it was More Cyberpunk with cheesy PG-rated holographic dancing girls and Comix Zone-style story panels, I also also recommend trying the demo for Ninja Issen. Out today , it's the work of solo Korean dev Asteroid-J, and based on the first level, is pretty decent. It does have quite a lot of dialogue for a ninja platformer, but the dialogue is tongue-in-cheek, and hopefully it'll fall by the wayside as you push beyond the tutorial sections. Read more
- Ninja Issen (忍者一閃)'s Official Release Date Confirmed! - 10 November 2023
Hello, this is CFK. Thank you for the outpouring of love and attention you’ve shown for hyper ninja action game Ninja Issen (忍者一閃). On Thursday, November 23, the official version of Ninja Issen (忍者一閃) will finally be released! We would like to extend our deepest thanks to all of the players who have waited for this official release and played through all the demo versions. This new game has been loaded up with all sorts of brilliant hyper ninja action techniques, a storyline that takes you between the past and present, and eye-catching visuals, all packed into a game with a whole lot to offer in terms of playtime. This version of Ninja Issen (忍者一閃) has been polished to perfection, so please continue to show your love and support as it approaches. In addition, we are also planning to release the official OST, containing all the cyberpunk charm Ninja Issen (忍者一閃) has to offer, so we hope…
- Ninja Issen(忍者一閃) New Demo Update 10/20/2023 - 20 October 2023
Hello, this is CFK. Thank you for the continued interest in our hyper ninja action game, Ninja Issen, along with all the affection you've sent our way. In order to create a more pleasant gameplay experience for our players, today(Oct. 20th)'s demo has been updated as follows: • Bug fix for Kiba freezing when he's hit out of a skill move. • Bug fix for the map disappearing during double jumps. • Added a function that displays a "NEED SP" and EX skill "CHARGING" message for Kiba. • Altered level design in order to more easily convey in-game skill descriptions. - Save station/platform position changes; added visual representations of skills • Other quality-of-life gameplay improvements and game balance adjustments. We hope you play through this new and improved Ninja Issen yourselves, and we'll report soon with more news about the upcoming official release of the game. Please give the game…
- Ninja Issen(忍者一閃) New Demo Update 08/10/2023 - 10 August 2023
Hello, this is the team at CFK. Thank you so much for all the continued interest and love for our hyper ninja action game Ninja Issen! From Thursday, August 10th to Wednesday, August 16th, Ninja Issen will be taking part in the Big Game Show (BIGS) 2023! Today (Aug. 10th), we are releasing a new version of the demo to allow players to experience the new face of Ninja Issen. • In addition to English, the new demo also supports Korean, Japanese, and Chinese (Simplified and Traditional). • UI selection and character movements have been improved for a more enjoyable experience. • Now features an in-game option menu where players can adjust the game’s resolution, screen mode, and filter to suit their tastes. • Various quality-of-life improvements and balance adjustments have also been made. We hope that you will try out the new and improved demo for Ninja Issen. We will be in touch soon with…
- 『Ninja Issen(忍者一閃)』 Latest demo to be featured at Steam Next Fest! - 22 February 2022
Hello, We are proud to announce that the hyper ninja action game Ninja Issen (忍者一閃) will be featured at Steam Next Fest 2022. To prepare for the big event, developer Asteroid-J is releasing the latest version of the Ninja Issen demo today! Today’s Ninja Issen release features various improvements, such as enemy balancing, difficulty smoothing, and cut scene illustration changes, based on hundreds of comments received from users like you! Players are sure to enjoy the first taste of the game as they strut our hero through this lively cyberpunk world and engage in a variety of heart-pumping enemy encounters. Download the demo, and try it out today! In addition to the new demo, you can check new screenshots like reworked cut scenes, new stages to be released, and more enormous bosses, revealing the various elements in development and the overall direction of the game. We deeply appreciate…
