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@UndertaleLastUpdate: statistics and cleanliness index

Undertale Last Corridor Sneak Peaks

Hi everyone, idk enjoy

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Grade A metrics look normal cleanliness index
data from 2026-10-19
Subscribers
88
Median views
90
ERR
102.3%
Posts sampled
40
Niche Video Games
Post language Russian
Channel age 1 year

Data from 2026-10-19 — 18 days old.

Assessment summary

Fan channel about the Roblox Undertale Last Corridor: skin and update announcements under #SneakPeek, shitposts, and short notes in Russian; the channel is 11 months old.

ERR 102.3% — a post is seen by more people than there are subscribers in the channel, and this is higher than about a third of similar channels in the catalog; the median views over a month and a half grew from 47 to 90. At the same time, engagement is weaker: reactions are 2% vs 5.88% for similar channels, discussion is sustained by a narrow group of authors, and the last post was 6 days ago at the usual pace of 2.1 posts per day. Absolute reach is tens of people: the share is high, but the base is small.

About the channel

A channel about the Roblox Undertale Last Corridor: sneak peeks of new skins and updates, shitposts, and short notes in Russian. It has been running for 11 months; the feed is mostly text and images, with video in about every fifth post.

In the catalog, next to it are large gaming channels — @mir_supercell about Supercell games, @narek_cr about Clash Royale, and @cb_games about games and movies. This channel is much smaller: 88 subscribers vs hundreds of thousands and millions for them, but the share of subscribers who see a post is higher than for @mir_supercell and higher than for @cb_games.

What it publishes:

  • Sneak peeks: screenshots and videos of new skins — a Halloween skin for Fell, an SS Chara skin, a Classic Sans remodel.
  • Development news: the developers promise a modest Halloween and a big Christmas.
  • Shitposts: images with Killer Sans and captions like “Killer's Kiosk”.
  • In-game tasks: how to get the Jeff the Killer skin — a badge for 50 waves in endless mode.

Posts are published mainly in the morning (57%) and evening (30%), on weekdays — 85% of publications; there are almost no forwards from other channels. By subscriber count, this is one of the smallest channels in the niche. Short notes and images with almost no ads — people drop by here for fresh sneak peeks, not for long texts.

By subscribers, it ranks #88 of 91 channels in the Video Games niche of the catalog.

What to pay attention to

Comments are written by a narrow circle of accounts (14 out of 68)

The share of unique authors among comments is low — discussion rests on a small group of accounts. This may also be an active core of readers.

What grade A means

Metrics look normal: no signals lowering the index were found, or they are weak.

Compared with similar channels

Compared with 6 Video Games catalog channels whose metrics look normal. They are a similar size: 33 to 261 subscribers.

ERR (reach) higher than 4 of 6
@UndertaleLastUpdate 102.3%
similar channels median 32.7%
Reactions per 100 views lower than 6 of 6
@UndertaleLastUpdate 2
similar channels median 4.98

This is not a niche norm: only catalog channels are included. A high ERR is not always a plus: if the other metrics do not support it, the index goes down.

Dynamics and anomalies

Scroll horizontally to see the full charts.

Views by post

The latest 40 posts with views, from Sep 23 to Oct 12. The dashed line is the median (90).

061123Sep 23: 96 viewsSep 23: 111 viewsSep 24: 111 viewsSep 25: 111 viewsSep 25: 123 viewsSep 28: 101 viewsSep 29: 82 viewsSep 29: 81 viewsSep 29: 94 viewsSep 29: 92 viewsSep 29: 100 viewsSep 30: 97 viewsOct 1: 90 viewsOct 1: 100 viewsOct 1: 97 viewsOct 2: 78 viewsOct 2: 81 viewsOct 2: 75 viewsOct 3: 94 viewsOct 4: 95 viewsOct 4: 90 viewsOct 4: 90 viewsOct 4: 83 viewsOct 4: 87 viewsOct 5: 90 viewsOct 5: 73 viewsOct 6: 75 viewsOct 7: 77 viewsOct 8: 58 viewsOct 8: 61 viewsOct 8: 66 viewsOct 9: 81 viewsOct 9: 84 viewsOct 9: 85 viewsOct 9: 83 viewsOct 9: 92 viewsOct 9: 94 viewsOct 9: 98 viewsOct 10: 78 viewsOct 12: 62 views Sep 23Oct 12
  • post views
  • median 90

Maximum: 123 views. Data as of Oct 19.

What could not be calculated

View build-up not assessed: there were no posts newer than one day.

Cleanliness-index history

2 checks for this channel.

050100Sep 7: index 100, grade A+Sep 7Oct 19: index 88, grade AOct 19

Advertising outlook

Advertising placement: reasonable.

Not enough posts for a forecast.

Reach of advertising posts

No advertising posts among the latest 40.

Buy advertising

Telegram ads are sold on these marketplaces — they have channel catalogs, prices, and checkout.

We don't sell ads. This channel may not be listed there.

Where to buy advertising

Affiliate links: we get a commission. It never affects the channel's score.

Questions about @UndertaleLastUpdate

Is the channel clean? What does the cleanliness index show?

The cleanliness index is 88 out of 100, grade A, level “metrics are normal”. There are few noticeable deviations in the metrics.

What is the reach of posts?

The median is 90 views with 88 subscribers, ERR about 102%: a post is seen by more people than there are subscribers in the channel. The check data does not show where these views come from.

Is it worth advertising here?

Placement is marked as justified. No ad posts were found in the sample, so the reach of ad posts was not calculated; absolute views are about 90 per post.

How the assessment was produced

Data source
Public Telegram data: posts, views, reactions, and channel metadata.
Date or snapshot
2026-10-19
Sample
The latest 40 public posts available at check time.
Calculation method
TG Inspector calculates metrics from the saved snapshot and combines independent signals into a deterministic 0–100 cleanliness index.
Factual result
The @UndertaleLastUpdate assessment dated 2026-10-19 uses 40 recent public posts. At that snapshot the channel had 88 subscribers, median post views were 90, ERR was 102.3%, and the cleanliness index was 88/100.
Limitations
This is a probabilistic assessment based on public data: it describes metrics, not the owner's actions, and is not a real-time measurement.

Full methodology and interpretation rules

This automated assessment is probabilistic: it describes the channel's public metrics, not its owner's actions. The index and grade are calculated from public data and are not changed on request. Channel owners can request removal of the page — t.me/obsessed_with_ai.