An archive of all UNDERTRASH-related developer tweets, including development updates, teasers, and discussions.
Reposting because more people should see this
— Tboogle | Making UNDERTRASH (@Tboogle20) March 2, 2026
SPAM-TRON concept sheet from @SPAMTENNA_YEAH! I might just integrate some of these ideas into UNDERTRASH. Everyone go follow them right now! pic.twitter.com/BPbdx6ep8I
I’m not the greatest artist in the world, but I wanted to sketch out this boss design for one of the routes in UNDERTRASH. Feedback appreciated!#undertale #deltarune #spamtenna #utspamtenna pic.twitter.com/Y1GEkhwTi3
— Tboogle | Making UNDERTRASH (@Tboogle20) February 28, 2026
Been trying to find a battle theme that fits this vibe because I love this story concept. So far I haven’t found anything that’s quite right. Feel free to send me stuff https://t.co/suiw3Hn1IV
— Tboogle | Making UNDERTRASH (@Tboogle20) February 28, 2026
My whole family now officially knows that I’m making a fangame based on a gay ship lol
— Tboogle | Making UNDERTRASH (@Tboogle20) February 26, 2026
I was never hiding it or anything I just never brought it up pic.twitter.com/mIyfM7aoSH
UNDERTRASH now has an official website! Everything related to the game can be found here. Check it out!https://t.co/GoRHGjhSVh#undertale #deltarune #spamtenna #utspamtenna pic.twitter.com/EIwsKqWcDh
— Tboogle | Making UNDERTRASH (@Tboogle20) February 25, 2026
4, this is the fourth utc engine patch. And its also huge too
— CC is doin commisions!!! (@CloestarC2) February 16, 2026
HUGE shoutouts to @Tboogle20 , he helped me alot for this update so yall better say ty tbooglehttps://t.co/ROCS2Yh93a https://t.co/OG1hsWEdmh
Hopped on a call with the amazing @CloestarC2 to help fix some bugs in the UTC engine. Keep an eye out for an update soon!
— Tboogle | Making UNDERTRASH (@Tboogle20) February 1, 2026
Still wondering about whether or not I should put UNDERTRASH under my @Studio7eDev name. Studio 7e has only ever published fangames so far (FNAF, Tetris) so it would technically fit, but it's also not trying to be somewhat original like the other 7e games, so I'm conflicted.
— Tboogle | Making UNDERTRASH (@Tboogle20) January 22, 2026
I'm officially restarting development of UNDERTRASH in an engine that actually makes sense! Progress may be slow due to me being in college, but it's moving again! Big thanks to @CloestarC2 for making the UTC Engine.#undertale #deltarune #spamtenna #utspamtenna #gamedev pic.twitter.com/qsNovIu5ud
— Tboogle | Making UNDERTRASH (@Tboogle20) January 13, 2026
Finally got around to trying out the UTC engine and I'm just now realizing that the Undertrash logo is GAME-INACCURATE im gonna die
— Tboogle | Making UNDERTRASH (@Tboogle20) January 13, 2026
Ended up starting work on a whole new game instead, I really gotta get my priorities straight https://t.co/Hwozlp5w9u
— Tboogle | Making UNDERTRASH (@Tboogle20) January 3, 2026
2026 goal:
— Tboogle | Making UNDERTRASH (@Tboogle20) January 1, 2026
- Make more STUFF
TV Land (WIP) sounds so much like an Undertale battle theme, there’s no way I’m not putting that in Undertrash it’s perfect
— Tboogle | Making UNDERTRASH (@Tboogle20) December 19, 2025
might remake what little of undertrash i have using this and continue from there https://t.co/lP8Bf3EKDP
— Tboogle | Making UNDERTRASH (@Tboogle20) December 6, 2025
The dump's greatest art exchange#undertale #deltarune #spamtenna #utspamtenna pic.twitter.com/4NGrvkCpZA
— Tboogle | Making UNDERTRASH (@Tboogle20) October 14, 2025
I just had to#undertale #deltarune #utspamtenna #smilingfriends pic.twitter.com/Jc6CnqCjsh
— Tboogle | Making UNDERTRASH (@Tboogle20) October 7, 2025
Whipped up some music tracks to use in the main menu and overworld areas. Check ‘em out!#undertale #deltarune #spamtenna #utspamtenna https://t.co/IcAtmiH83A pic.twitter.com/ScW5rHdgLj
— Tboogle | Making UNDERTRASH (@Tboogle20) October 6, 2025
art is hard pic.twitter.com/xpu2PEA7O3
— Tboogle | Making UNDERTRASH (@Tboogle20) October 6, 2025
Looking back, this was just about the absolute worst way to ask someone permission to use their music, I’m surprised I even got permission at all after that https://t.co/5t9jCWna8l
— Tboogle | Making UNDERTRASH (@Tboogle20) September 30, 2025
uhh guys... where'd he go?#undertale #deltarune #utspamtenna https://t.co/kDVkVkRYBj pic.twitter.com/eqDz4Bb79X
— Tboogle | Making UNDERTRASH (@Tboogle20) September 28, 2025
Not me drawing enemy sprites because I'm putting off finishing the battle system pic.twitter.com/OS9ZbyTT5C
— Tboogle | Making UNDERTRASH (@Tboogle20) September 27, 2025
If I'm not mistaken this is the first piece of art depicting Spamton and Tenna in the UT dump, therefore making @MahouShoujo115 technically the creator of the AU? https://t.co/sDfLslgJp9
— Tboogle | Making UNDERTRASH (@Tboogle20) September 26, 2025
Question: Who created the #utspamtenna AU that my fangame is based on? There's been so much art by so many different people it's hard to tell who made the first one
— Tboogle | Making UNDERTRASH (@Tboogle20) September 25, 2025
Figured I'd make a bio sheet for UNDERTRASH to get their character traits locked down for this fangame. The reason I gave Spamton a cryptic backstory is because I didn't want to come up with one lol#undertale #deltarune #spamtenna #utspamtenna https://t.co/piw7u2L1b1 pic.twitter.com/gmQ5siq95C
— Tboogle | Making UNDERTRASH (@Tboogle20) September 24, 2025
Convo I had with my brother @PixTheBro about it (3?/2) pic.twitter.com/gF5HMNmM5R
— Tboogle | Making UNDERTRASH (@Tboogle20) September 24, 2025
Concept for a potential change in Spamton's speech pattern, replacing the [[Brackets]] with "Things he's read." Still not 100% on it, as I feel the brackets are a really core part of his character. He's still SPAMton after all. (Left old, right new) (1/2) https://t.co/exrrimvA9z pic.twitter.com/hkYGOowDoB
— Tboogle | Making UNDERTRASH (@Tboogle20) September 24, 2025
UNDERTRASH is officially Spamton G. Spamton approved pic.twitter.com/jMuHgsDgqO
— Tboogle | Making UNDERTRASH (@Tboogle20) September 23, 2025
Teaser 2 for UNDERTRASH: This time, the opening cutscene leading into the first battle. I'm so glad everyone is liking this, it's gonna be great!#undertale #deltarune #spamtenna #utspamtenna https://t.co/NTnrqCiGyV pic.twitter.com/e4NB0gNukI
— Tboogle | Making UNDERTRASH (@Tboogle20) September 20, 2025
As for battle sprites, I already got that covered as well pic.twitter.com/B4FHxs2IIW
— Tboogle | Making UNDERTRASH (@Tboogle20) September 19, 2025
Spamton's appearance based on this concept sheet from @NoNameNorAim (it'd be great to get those sprites in full quality, no rush ofc but pretty please) https://t.co/BtpsiQXEMi
— Tboogle | Making UNDERTRASH (@Tboogle20) September 17, 2025
* It’s Tenna’s personal movie collection.
— Tboogle | Making UNDERTRASH (@Tboogle20) September 2, 2025
* Peruse the contents?
❤️ Yes No
* …The only movie is a VHS tape of “Santa Claus Conquers the Martians.”
* Play it?
❤️ Yes No
* …He only has a DVD player.
First look at my #utspamtenna fangame, still very much a work-in-progress with placeholder sprites and animations, but I thought I might share what I have so far. It's happening!#undertale #deltarune #spamtenna https://t.co/fGZSGXurG1 pic.twitter.com/bOcAxkmEXh
— Tboogle | Making UNDERTRASH (@Tboogle20) August 26, 2025
guys i think something's wrong with my undertale who is this guy#undertale #deltarune #starwalker pic.twitter.com/sfyhelNVRh
— Tboogle | Making UNDERTRASH (@Tboogle20) August 20, 2025
I’m getting ideas for an #utspamtenna fangame. I’ll share progress if I start making it
— Tboogle | Making UNDERTRASH (@Tboogle20) August 9, 2025