Unused UNDERTALE/DELTARUNE Content
@undertalebeta.bsky.social
Cataloging and Archiving various pieces of Unused Content from UNDERTALE/DELTARUNE History.
After decades of searching, we have found the EXTENDED original concept art for Mr. (Ant) Tenna! Looking good buddy...!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
November 5, 2025 at 9:49 PM
After decades of searching, we have found the EXTENDED original concept art for Mr. (Ant) Tenna! Looking good buddy...!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
We have found an unused scenario for Papyrus' battle, in which two enemies, "P-1" and "P-2" would come to aid him! If you try to ACT or FIGHT either of them, the game crashes, so we only have this screenshot.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
October 18, 2025 at 3:44 PM
We have found an unused scenario for Papyrus' battle, in which two enemies, "P-1" and "P-2" would come to aid him! If you try to ACT or FIGHT either of them, the game crashes, so we only have this screenshot.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Gusters Sunday! Tag a friend and celebrates! when did you start being your Gasters? let us know in reply it up down below
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
October 5, 2025 at 10:11 PM
Welcome to the FIRST EVER Gusters Sunday! Tag a friend and celebrates! when did you start being your Gasters? let us know in reply it up down below
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
It's our account's 4 year anniversary!
To celebrate this and the Halloween season, we'll be posting this EXCLUSIVE artwork of "Witch," which was removed from the UNDERTALE Kickstarter!
#UNDERTALE #DELTARUNE
To celebrate this and the Halloween season, we'll be posting this EXCLUSIVE artwork of "Witch," which was removed from the UNDERTALE Kickstarter!
#UNDERTALE #DELTARUNE
October 3, 2025 at 1:46 AM
It's our account's 4 year anniversary!
To celebrate this and the Halloween season, we'll be posting this EXCLUSIVE artwork of "Witch," which was removed from the UNDERTALE Kickstarter!
#UNDERTALE #DELTARUNE
To celebrate this and the Halloween season, we'll be posting this EXCLUSIVE artwork of "Witch," which was removed from the UNDERTALE Kickstarter!
#UNDERTALE #DELTARUNE
September 21, 2025 at 2:57 AM
COOL BREAKING NEWS LIVE: Toby Fox has just shown off a new fight for Scary Neutral Dummy in the special 10th Anniversary Stream of UNDERTALE! Please take a look.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
September 21, 2025 at 2:56 AM
COOL BREAKING NEWS LIVE: Toby Fox has just shown off a new fight for Scary Neutral Dummy in the special 10th Anniversary Stream of UNDERTALE! Please take a look.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
We apologize for the lack of special posts, we have been playing Hollow Knight: Silksong. Look forward this friday to something "Certifyed new ande fresh!" IT'S AFTER ME!!!!!! HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
September 8, 2025 at 3:13 AM
We apologize for the lack of special posts, we have been playing Hollow Knight: Silksong. Look forward this friday to something "Certifyed new ande fresh!" IT'S AFTER ME!!!!!! HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
In a pre-release patch of DELTARUNE, an early version of Tenna's pre-battle cutscene in Chapter 3 shows a scrapped easter egg where a scary clone would take his place.
When asked about it, Mr. Tenna said something about our house we couldn't quite make out.
#UNDERTALE #DELTARUNE
When asked about it, Mr. Tenna said something about our house we couldn't quite make out.
#UNDERTALE #DELTARUNE
September 2, 2025 at 9:09 PM
In a pre-release patch of DELTARUNE, an early version of Tenna's pre-battle cutscene in Chapter 3 shows a scrapped easter egg where a scary clone would take his place.
When asked about it, Mr. Tenna said something about our house we couldn't quite make out.
#UNDERTALE #DELTARUNE
When asked about it, Mr. Tenna said something about our house we couldn't quite make out.
#UNDERTALE #DELTARUNE
Today Toby Fox released a new update for UNDERTALE on a private scary Steam branch that has added many new areas and endings. There is a funny guy
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
September 2, 2025 at 8:37 PM
Today Toby Fox released a new update for UNDERTALE on a private scary Steam branch that has added many new areas and endings. There is a funny guy
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
August 23, 2025 at 12:59 AM
Welcome to the FIRST EVER Guaster Fridays! Every week we it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the third fifth Friday, we gotta cool Guaster with his thumb. Uh oh!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
August 8, 2025 at 10:12 PM
Welcome to the FIRST EVER Guaster Fridays! Every week we it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the third fifth Friday, we gotta cool Guaster with his thumb. Uh oh!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we found Gaster's commercial! Gasters? Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
August 1, 2025 at 8:26 PM
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we found Gaster's commercial! Gasters? Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta secret Gaster.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
July 25, 2025 at 8:40 PM
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta secret Gaster.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Fridays! Every week we it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the third fifth Friday, we gotta cool with his thumb. Yeah! It's up. ? Let us know Its Multiplyeing
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
July 22, 2025 at 3:24 AM
Welcome to the FIRST EVER Fridays! Every week we it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the third fifth Friday, we gotta cool with his thumb. Yeah! It's up. ? Let us know Its Multiplyeing
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
In a Nintendo magazine advertising DELTARUNE for the Switch 2, we noticed a screenshot that appeared to contain details relating to a scrapped character and their quest-line.
We have scanned this image using an ability, so please take a look for yourself!
#UNDERTALE #DELTARUNE
We have scanned this image using an ability, so please take a look for yourself!
#UNDERTALE #DELTARUNE
July 8, 2025 at 1:13 AM
In a Nintendo magazine advertising DELTARUNE for the Switch 2, we noticed a screenshot that appeared to contain details relating to a scrapped character and their quest-line.
We have scanned this image using an ability, so please take a look for yourself!
#UNDERTALE #DELTARUNE
We have scanned this image using an ability, so please take a look for yourself!
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta cool gaster with his thumb. It's up. Wait, don't. Wait... don't!!! Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
July 4, 2025 at 8:55 PM
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta cool gaster with his thumb. It's up. Wait, don't. Wait... don't!!! Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
In an abandoned laptop we found lyeing around, we were able to gain access to a private testing build of DELTARUNE Chapter 5. Here is what we've found so far by searching the "vid" subfolder!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
July 2, 2025 at 2:06 AM
In an abandoned laptop we found lyeing around, we were able to gain access to a private testing build of DELTARUNE Chapter 5. Here is what we've found so far by searching the "vid" subfolder!
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
IT SAW ME
July 1, 2025 at 7:20 PM
IT SAW ME
In untested PC builds of DELTARUNE Chapter 4, Kris's "OldMan" ACT would change its description (and name under certain conditions) if you waited for prolonged periods of time.
Screenshot 1 - after 24 hours of waiting
Screenshot 2 - after 48 hours of waiting
#UNDERTALE #DELTARUNE
Screenshot 1 - after 24 hours of waiting
Screenshot 2 - after 48 hours of waiting
#UNDERTALE #DELTARUNE
June 25, 2025 at 10:25 PM
In untested PC builds of DELTARUNE Chapter 4, Kris's "OldMan" ACT would change its description (and name under certain conditions) if you waited for prolonged periods of time.
Screenshot 1 - after 24 hours of waiting
Screenshot 2 - after 48 hours of waiting
#UNDERTALE #DELTARUNE
Screenshot 1 - after 24 hours of waiting
Screenshot 2 - after 48 hours of waiting
#UNDERTALE #DELTARUNE
After this ending, you would unlock the planned "Skeleton Mode," this is the only screenshot we have left, we are working valiantly like warriors to recover the Skeleton Build
May 28, 2025 at 10:45 PM
After this ending, you would unlock the planned "Skeleton Mode," this is the only screenshot we have left, we are working valiantly like warriors to recover the Skeleton Build
Shortly before the release of UNDERTALE, an ending where the NPC from Hotland "Sans" would unfortunately destroy the world, leading to an "everyone sad ending." This special ending was removed after Sans had requested it to be.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
May 28, 2025 at 9:49 PM
Shortly before the release of UNDERTALE, an ending where the NPC from Hotland "Sans" would unfortunately destroy the world, leading to an "everyone sad ending." This special ending was removed after Sans had requested it to be.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the SECOND EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the second Gaster Friday, we gotta cool gaster with his thumb. Yeah! It's up. Gasters? Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
May 9, 2025 at 10:58 PM
Welcome to the SECOND EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the second Gaster Friday, we gotta cool gaster with his thumb. Yeah! It's up. Gasters? Let us know how you think.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta, uhhh, I think um, it's like... this kind of thing that's like something and I think i dunno i forgot
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
April 17, 2025 at 9:45 PM
Welcome to the FIRST EVER Gaster Fridays! Every week we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we gotta, uhhh, I think um, it's like... this kind of thing that's like something and I think i dunno i forgot
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
What the fuck lol
April 10, 2025 at 4:54 PM
What the fuck lol
We have made a shocking discovery! The trailer for DELTARUNE Chapter 3&4 has been revealed early, the trailer does contain spoilers, so view at your own risk.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE
March 29, 2025 at 8:44 PM
We have made a shocking discovery! The trailer for DELTARUNE Chapter 3&4 has been revealed early, the trailer does contain spoilers, so view at your own risk.
#UNDERTALE #DELTARUNE
#UNDERTALE #DELTARUNE