
Kazutaka Kodaka and Kotaro Uchikoshi join forces for the first time to deliver the ULTIMATE adventure game! 15 students are tasked with defending a school from grotesque monsters for 100 days. Can they make it to the end? And will they survive long enough to uncover the truth?
Modeled estimate, not a reported figure. How we estimate →
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 2.71/day in the week to Aug 2 → 2.43/day in the week after.
For scale, across Steam · Top Sellers · Poland over the last 30 days: the 21 chart moves that followed a price cut of more than 20% went a median of 12 places towards #1, and the 2,501 moves with no price cut behind them went 1 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Takumi Sumino is a totally average teenager living in the Tokyo Residential Complex, a place where every day is much like the last and nothing bad ever happens. All that changes when freakish monsters attack the town and start wreaking havoc. A strange creature calling himself Sirei appears and offers Takumi the power to protect those he holds dear... All he has to do is stab himself in the chest!
The next thing he knows, Takumi is in Last Defense Academy, a school in the middle of nowhere surrounded by a wall of otherworldly flames. He and 14 other students have been drafted into the Special Defense Unit, a team tasked with keeping the school safe for the next 100 days. How much are they willing to sacrifice to take back their normal lives and save the world from the grotesque school invaders?
The curtain rises on 100 days of war and despair...
Takumi's choices will decide his future, but there's no telling what kind of consequences these decisions might have...
When the invaders attack, it's up to you to protect the school in SRPG battles.
Use each student's unique Specialist Skills to turn the tide of battle in your favor!
Spend time with your teammates to deepen your bonds, or explore the wilderness and ruins outside the school.
You can even use the items you find to craft gifts and get even closer to your allies!
Genres
Add-ons
Each DLC is estimated with the same model as a game, then summed — a modeled figure, not reported DLC sales.
Sums Steam only; Nintendo publishes no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $48.99−30% | 8.7Kreviews | 88% | — | $20.2M |
| $59.99 | — | — | — | not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Reviews
Themes across 894 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
The game is 100% worth its price both on content and quality. However getting all 100 endings can be a bit painfull depending on how invested you are on the story and the characters. It made me certainly feel things, mostly frustration with how some routes went. But it certainly got me invested so I cant complain that much. My favorite characters constantly shifted, my least favorite not all that much and at the end I hardly like anyone of them anymore. Some characters annoyed me from start to finish with zero redeeming qualities. Just be prepared that some routes have really dark and sensitive themes if you have a trauma. If certain stuff triggers you you might nees to look that up. Can I recommend this? I dont know to whom, all my friends are basic normies that wont stare at this weeb stuff for 200 hours. But they definitely should which just makes me even more disappointed in them. Buy on sale, economy is bad
你们都不来玩的话会显得我很可怜
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Japanese*, Simplified Chinese, Traditional Chinese, Korean*languages with full audio support
Hours played at review time, across 896 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
原本是打算打全成就的,奈何游戏不知道为什么一直闪退,有机会继续吧。 小高和刚你干得好啊,写男同写女人给你卖得不知天地为何物了,苍澄姐就这么过好日子,有关苍月的塑造我觉得是在小高系作品历代男二中相当出类拔萃的了,喜欢爱看多看,小高你要知道讨好老中同人女你就有好日子过,总之你是谁请支持百日战纪
Game too short.
Only done one route and started my second route. This game is pretty damn good
80分水平 少了20分是因为只有和伊娃私奔没有和牢维私奔. 我要牢维我要牢维我要牢维
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $13.6M | 27.1K | 97% | $29.99 | |
| $13M | 22K | 83% | $39.99 | |
| $1.1M | 615 | 89% | $59.99 | |
| $12M | 38.8K | 96% | $19.99 | |
| $458.4K | 1.5K | 91% | $5.23 | |
| $71.8K | 63 | 40% | $49.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $20.2M | 21.8K | 94% | $23.99 | |
| $20.2M | 174.3K | 93% | $4.99 | |
| $20.1M | 37.7K | 86% | $14.99 | |
| $20.1M | 26.6K | 90% | $19.99 | |
| $20.1M | 19.8K | 88% | $39.99 | |
| $20M | 32.4K | 88% | $24.99 |