UDONGEIN X
Released Dec 2021
Help Reisen Udongein Inaba navigate through 14 action packed stages in this exhilarating 2D Bullet Hell Platformer based on Touhou Project!
92% positive · 455 reviews
Done
All announced content has been released
Medium confidence
Done
All announced content has been released
Medium confidence
Where to buy
Steam $4.99
Can't confirm — worth a look
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Evaluation
UDONGEIN X launched on December 3, 2021 as a complete 2D bullet hell platformer. After launch, the developer released one paid character DLC — Seiran on November 17, 2022 — along with an official soundtrack on January 20, 2023. Both items are now fully released, and no additional DLC has been listed on the store. The developer's last communication was the November 17, 2022 news post announcing the Seiran DLC. Since then, there have been no announcements of additional content, no roadmaps, and no further developer posts. With all released DLC now shipped and no unshipped content visible on the store, the game appears to have concluded its post-launch content cycle as of the soundtrack release in January 2023.
Evidence
Developer announced the Seiran character DLC alongside a patch with new language options, bug fixes, and balance changes. This is the last known developer communication.
Seiran DLC released, adding a new playable character.
Content
2 of 2 released · no outstanding content
Media
Details
Developer
Publisher
Bar Holographic Otaku
Achievements
17
Platform
Windows
Controller
full support
Steam Deck
Playable
Players
Single-player
About this game
Lunarians Are Up to Something Again!
A small group of Moon Rabbits has crash landed in Gensokyo. They have been left on their own! It's up to Reisen to (reluctantly) rescue each one of her former comrades and beat some sense into Lunarians once and for all. Do your best, Udon-chan!14 Unique and Engaging Boss Fights
Every Boss has a gimmick of their own and requires a different strategy! In addition to dodging bullets, you have to respect each Boss' different mechanics if you want to have a chance at winning.Make Reisen Stronger!
You can invest Power Up items you get from Stages and Bosses into upgrades to make Reisen more powerful. This ranges anywhere from increasing max health to giving you the ability to erase entire screens worth of bullets in your path! Of course, you can ignore this system if you want to challenge yourself.3 Difficulty Settings
Feel like the game is too hard? You can set the difficulty to Easy if you want a more traditional platformer experience with less bullets on screen. Alternatively you can choose Lunatic for a true test of skill and patience. DISCLAIMER: You have to beat the game at least once to unlock Lunatic difficulty. Changing a difficulty setting requires a reset of your current playthrough.An Additional Mode
SURVIVAL is a Boss Rush mode where you can select different perks in between fights. It will get progressively harder, so stay sharp! Who knows, maybe if you get a big enough win streak, you might unlock something interesting...Are these done yet?
Last evaluated Jun 22, 2026
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