Buy UDONGEIN X PC

Moon Rabbits crash-land in Gensokyo, forcing Reisen to rescue her former comrades and confront meddling Lunarians. This indie action game delivers 14 boss fights, each with distinct gimmicks that demand unique strategies beyond bullet dodging. Players collect Power Up items from stages and bosses to upgrade Reisen, boosting max health or unlocking screen-clearing abilities, though skipping upgrades amps up the challenge. Three difficulty settings cater to varied skill levels: Easy reduces bullets for a smoother platformer feel, while Lunatic tests true mastery after unlocking it with one clear. Survival mode offers a boss rush with selectable perks between escalating fights, rewarding long streaks. Hardcore action fans who crave strategic depth and bullet-hell precision will find their match here.

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...