1. Free P Route Sans Battle Game
2. Mr. Sunshine Abberant Monster Fight
3. Undertale Anniversary Event Game
4. No Damage Sans Battle Challenge
5. Playable Undertale Monster Encounter

『UNDERTALE』なんと“Pルートのサンズ”と戦えるゲームが無料で公開。ダメージは受けないけれどちゃんと難しいhttps://t.co/0gzZugAJuL

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10周年記念配信にて登場した新モンスター「Mr. Sunshine and Abberant」とも戦える。超残念ながら配信用のゲーム本編は遊べない、遊ばせてくれ pic.twitter.com/CSUABoyf8W

— 電ファミニコゲーマー (@denfaminicogame) September 22, 2025

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The tweet above announces the release of a new game where players can battle against “P Route’s Sans” from UNDERTALE for free. This unique game offers a challenging experience as players do not take any damage during battles, adding an extra layer of difficulty. Additionally, the game features a new monster called “Mr. Sunshine and Abberant” that players can also encounter during the 10th-anniversary livestream. Unfortunately, the game’s main story is not available for play during the livestream, but players can still enjoy the battle experience. Fans of UNDERTALE and gamers looking for a new challenge will enjoy the opportunity to fight against these iconic characters in this free game. Stay tuned for more updates on this exciting release!

Undertale fans, get ready for an exciting new development in the world of gaming! A game where you can battle none other than “Pルートのサンズ” has been released for free. The best part? You won’t take any damage, but don’t be fooled, it’s still quite challenging. This thrilling new game was unveiled during the 10th-anniversary livestream and allows players to face off against the new monsters “Mr. Sunshine and Abberant.” Unfortunately, you won’t be able to play the full game during the livestream, but you’ll definitely want to give it a try.

The anticipation surrounding this new game release is palpable among Undertale enthusiasts. The opportunity to go head-to-head with “Pルートのサンズ” in a battle where you won’t suffer any damage is truly a unique and exciting experience. The game manages to strike a perfect balance between being accessible to all players while still providing a challenge that will keep you on the edge of your seat.

During the 10th-anniversary livestream, fans were treated to a sneak peek of the new monsters “Mr. Sunshine and Abberant,” which only added to the excitement surrounding the game. The addition of these new characters brings a fresh element to the gameplay and offers players a chance to test their skills against formidable opponents.

While the full game may not be available to play during the livestream, the opportunity to engage with this new content is something that fans will undoubtedly appreciate. Being able to participate in battles with iconic characters from Undertale in a different context is a refreshing and enjoyable experience that adds depth to the overall gaming experience.

For Undertale fans who have been eagerly awaiting new content, this game release is a dream come true. The ability to engage with beloved characters in a new and exciting way is a testament to the enduring popularity of the game and the creativity of its developers. The free availability of the game ensures that fans from all walks of life can join in on the fun and experience the thrill of battling “Pルートのサンズ.”

In conclusion, the release of this new game featuring “Pルートのサンズ” is a delightful surprise for Undertale fans everywhere. The opportunity to engage in challenging battles without taking any damage is a unique twist on the traditional gameplay experience. With the addition of new monsters like “Mr. Sunshine and Abberant,” players are in for an exciting and memorable gaming experience. So, grab your controller and get ready to face off against some of Undertale’s most iconic characters in this thrilling new game.

1. Free Undertale spin-off game
2. Sans P Route battle game
3. Mr. Sunshine and Abberant monsters
4. Undertale anniversary event
5. Play Undertale spin-off online
6. No damage battle game
7. Challenging Undertale spin-off
8. New monster Mr. Sunshine
9. Abberant monster battle
10. Undertale spin-off event
11. Free online monster battle game
12. Undertale anniversary celebration
13. Play Mr. Sunshine and Abberant
14. Exciting Undertale spin-off
15. No damage challenge game
16. Unique Undertale spin-off experience
17. Online battle with Sans P Route
18. New monsters in Undertale spin-off
19. Undertale event with Mr. Sunshine
20. Free monster battle game opportunity