Please read the disclaimers below.

Welcome! "Undertale Lost Content Archive" is an ever-growing group dedicated to archiving tons of extremely obscure content developed by Toby Fox, with most of it being from Undertale and Deltarune.

We're accepting submissions if they're good enough — fill this form https://forms.gle/zjrJQHszG8X7YLLv6 or send an e-mail to us with your brand new Lost Content!

~ DISCLAIMERS ~
- None of the videos posted on this channel are of real "leaks" or beta footage. All of them are fanmade, whether they were programmed or animated, by our small team, and made for fun.
- Some of the videos rely on shocking content that may not be suitable for all viewers.

Most Viewed Games

Undertale

3,192,913 views

42 videos

9:53

Deltarune

1,167,345 views

14 videos

52:28

New Super Mario Bros. Wii

40,067 views

2 videos

0:00

[ More ]

Latest Videos

[lost content] — #undertale Scrapped Character #funny

2026-05-26 12:00:00 AM ● 11,434 views ● 0:00

Undertale (2015)

[lost content] — This is #undertale #sans #funny

2026-05-25 12:00:00 AM ● 25,465 views ● 0:00

Undertale (2015)

Bug Report 2

2026-05-24 12:00:00 AM ● 24,525 views ● 0:00

[lost content] — #undertale but the Baby is Hungry #funny

2026-05-23 12:00:00 AM ● 151,607 views ● 0:00

Undertale (2015)

Gaster's Theme (10th Anniversary Build) - UNDERTALE

2026-05-12 12:00:00 AM ● 10,414 views ● 0:00

Undertale (2015)

Little One - LIMPTALE

2026-05-05 12:00:00 AM ● 41,174 views ● 0:00

LIMPTALE - Waterfald Baby

2026-05-03 12:00:00 AM ● 78,457 views ● 0:00

[lost content] — Undertale running PERFECTLY on a Real PS1❗

2026-04-25 4:27:34 PM ● 10,961 views ● 0:00

Undertale (2015)

[lost content] — Noelle Game #deltarune #noelle #funny

2026-04-25 4:27:31 PM ● 20,447 views ● 0:00

UNDERTALE - V1.001 Unused Cutscene

2026-04-25 12:00:00 AM ● 14,359 views ● 0:00

Undertale (2015)

[ More ]