A The Hundred Line Last Defense Academy Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €23.51 (-44%) at Difmark, Steam Account format · Cheapest official key: €41.99 · 9 verified stores, 20 offers in stock · Updated 06h 34min ago.
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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!
The Hundred Line Last Defense Academy for PC starts at €23.51 at Difmark, 44% under the €41.99 of the official store — but that is a shared account, not a key of your own. If you want a key tied to your own account, the cheapest is €41.99 at Steam.
That €23.51 already includes the Gocdkeys coupon, so apply it at checkout or the store will show you a higher price.
There are 20 offers across 9 stores, 15 of them in stock right now, which is what the price above is picked from.
That puts it 40% under its €39.13 average of the last 2 months, so today is a better entry point than most.
That €41.99 key is at its usual price: no bargain, no spike.
Worked out from 300 daily records of the Steam Key for The Hundred Line Last Defense Academy across 4 stores. See the full price history.
The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.
With the shared account at Difmark you log into an account that already owns the game: it is the cheapest route, but it never becomes yours and the seller keeps the credentials. If they ever lose or change them, you lose access.
The key at Steam costs €18.48 more, but you redeem it on your own account and the game stays there for good. That is the difference between renting and buying.
The 10 Steam Gift offers are pricier than the key and leave more room for error, because they depend on the region and on Steam friendship.
Beyond the standard edition at €41.99, there is the Deluxe at €74.81 at HRKGame, €51.30 more. Check on the store what each one adds before paying the difference.
All 20 offers redeem on US, so region is not something you have to check on this one.
50 outlets reviewed it and it averages 86 out of 100, with 82% recommending it.
| Release date | 04/24/2025 |
| Users rating |
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| Steam comments |
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Guide 15 students to defend a government-supported, high-tech school for 100 days while playing a mix of visual-novel and strategic RPG by the creators of Danganronpa and Zero Escape. It features tactical grid-based combat with AP, emotional storytelling, and mystery that will captivate players day one
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