開発日記 2026-04-09 safehavn.dev/blog/2026-04...

Here's a first taste of the Nintendo Switch Colossal Edition, packed with alluring collectibles and cover art by the talented Satchely. Pre-orders are open now, and coming soon to Europe! store.serenityforge.com/products/sae...

Step into early-2000s Japan through the unique, unsettling visuals of SAEKO: Giantess Dating Sim. Her world, now in a physical Nintendo Switch edition. Every choice you make is a moral test. Don’t let your guard down. store.serenityforge.com/products/sae...

SAEKO: Giantess Dating Sim が6月25日にNintendo Switchで発売されます。 ダウンロード販売のほか、パッケージ版は通常版・限定版の２種類が購入可能です。既に各種ストアで予約が始まっておりますので、ぜひ覗いてみてください！

WE HAVE A BIG ANNOUNCEMENT TOMORROW

Happy Valentines! To celebrate the lovers' day, #saekogame will be 50% off until February 17. Time to romance, huh? store.steampowered.com/app/2492120/...

🎅 HAPPY HOLIDAYS (and holy Steam Winter Sale)! #saekogame is 30% off on Steam now. Go check it ⏬️ store.steampowered.com/app/2492120/...

SAEKO fans around the world, we have some exciting news for you! You made your voices heard, and we’re pleased to announce that FIVE new language options are coming to “SAEKO: Giantess Dating Sim” soon! ・German ・French ・Brazilian Portuguese ・Russian ・Ukrainian #saekogame

Nominate #saekogame in Steam Award 2025! store.steampowered.com/steamawards/...

a little doodle because I can't stop thinking of her 🥲 #saekogame

#saekogame is now 25% off with the Steam Scream Fest. SAEKO: Giantess Dating SimはSteam絶叫フェスで現在25%オフセール中です。

"Kazu, sorry for cutting you off. I'll keep out of your way until you die, so rant all you want." カズ、遮っちゃってごめん。 もう死ぬまで邪魔しないから、あとは好きなだけ喚いて。 Today is the last day of #DailySAEKO, and a delicious-looking cake and Kazu appeared in the game. What did you give to whom today? 🍰🕯️🍖

"Everyone here is the worst! Awful! You're all crazy!" 「ここにいる人たち、みんな揃いも揃ってほんとに最低！信じられない、頭の変なやつらばっかり！」 #DailySAEKO today shows this scene of a fight. Chio and Clara, which one did you stand for?

Today, October 10th, is Saeko's birthday. Say hbd to her with a present 🎉 🍰 #saekogame

♪ Giant boobs raining down in the apocalypse of Sodom... ♪デカいおっぱいが降り注ぐそれはソドムの黙示録 Today is day 5 of #DailySAEKO. Characters may be gone, but their memory will not fade forever.

"I'll teach you how to sharpen that mind of yours. What do you think? Want a special lesson from an intellectual and imaginative guy like me?" 今日は特別に、知的で創造的なこのオレが、 オマエに頭の良くなる方法を教えてやるってのはどうだ？ #DailySAEKO has reached its halfway! Shimon offered a special lecture to Rin on this day 🧠✍️📱

"Hello? Can you hear my voice?" もしも〜し。わたしの声、聞こえてるかな〜？ Today is the third day of #DailySAEKO! Rin helped Yui contact her office 17 years ago today 📞👔

"Th-This is no coincidence... E-Everyone's going to be killed--all because of me..." こ、これが偶然なわけがない...や、やっぱり、ぼくのせいで、みんな殺されちゃうんだ... #DailySAEKO marks day 2! Maru and Kina came into the drawer this day 🐜🥛🐳

"Hey, how do your muscles look? Like your neck muscles. Can I slip my hand inside your hoodie?" ...ねえ。首筋とかの筋肉ってどうなってるの？ パーカーの中、ちょっとだけ手を入れてもいい？ Day 1 of #DailySAEKO is here! Today is the date of your experience with Moko and Taki 🥜🎯🎁💥

2008年、日本初のiPhoneが発売され、世界的な金融危機が発生し、そして、冴子とリンの不思議な共同生活が終わりました。 ということで、ゲーム内の出来事を記念し、10月5日から12日までSNSでイラストの連続投稿を行います！ #DailySAEKO のタグと一緒に、ぜひ皆さんで事件の18周年を祝いましょう🎂

Get #saekogame with a record-high 25% discount now store.steampowered.com/app/2492120/...

It's out on Steam now! And it's made with #ebitengine

Thank you for all #gamescom memories. It was a truly once-in-a-life experience to flight 17 hours and still see our games loved by enthusiastic fans far away from our home. Lots of positive feedbacks and gorgeous fan arts. Danke schön, und auf wiedersehen!

Meet us at #gamescom next weekend! We'll be hanging around the booth all day, but if you're kind enough to meet and greet us, please visit Japan Pavilion from 13:30 to 14:30 every day. We can't wait to see you folks!

We’re bringing our titles to #Gamescom — August 20–24! 🎮✨ Find us in Hall 10.2 at: 📍 Indie Arena Booth: Dome-King Cabbage, DIGITAL EXORCIST 📍 VIPO Booth/Japan Pavilion: SAEKO: Giantess Dating Sim, SKY THE SCRAPER (devs on site!) #indiedev #indiegames #gamescom2025

Estrenando mi nueva pantalla con saeko Quedo muy linda @safehavn.dev

I just found that game that seems so amazing. It looks like it was made for me 🥰 #sizesky store.steampowered.com/app/2492120/...

SAEKOクリア記念 #saekogame

✨Steam Community Items are live✨ Collect trading cards to unlock badges, emoticons & profile backgrounds. And… our biggest discount yet! SAEKO is 15% off for #BitSummit till July 23: store.steampowered.com/app/2492120/... #HYPERREAL #SAEKOgame #visualnovel #datingsim #gamedev #indiegame #indiedev

kina jeans sketch #saekogame 👖

#Bitsummit has started! We're handing out Saeko-themed original stickers at @hyperreal-official.bsky.social booth

HYPER REAL will be at #BitSummit Kyoto, July 18–20! At our booth you can: 🎮 play the world premiere demo of DIGITAL EXORCIST 💜 chat with giantess in SAEKO: Giantess Dating Sim 🏙️ fly high in SKY THE SCRAPER 🥕 take on Telebbit speedruns & win exclusive merch #HYPERREAL #gamedev #indiegames #indiedev

＼今年も冴子が京都にやってくる／ 7月18日〜20日、京都で開催される #BitSummit13th でSAEKOが展示されます。ぜひ @hyperreal-official.bsky.social 様のブースにお越しください！ 暑さ対策もお忘れなく☀️🏖️

Original soundtrack is OUT NOW! Go check it on selected platforms: Steam store.steampowered.com/app/3777180/... Bandcamp kypkyp.bandcamp.com/album/saeko-... YouTube www.youtube.com/watch?v=bkhw...

あなたはどっちを選んでくれた？ art by koh #saekogame #pixelart

We (the game and the devs) are going to take part in #gamescom this year! It's first oversea event for us and we're more than excited. Can't wait to trinken viel Kölsch 🍻

This was a fun one to make, 🥜 #saekogame

assorted #saekogame sketches

what is moko drawing??? #saekogame ✏️

冴子とリン、かけがえのない相手 art by koh #saekogame

Saeko is really pretty! #saekogame

【開発者対談インタビュー】『VA-11 Hall-A』開発者、巨大少女シム『SAEKO』は「巨女フェチじゃないが、“わかる”」、『SAEKO』開発者は『VA-11 Hall-A』を「正直かなり参考にした」とファン目線。ヘキだけじゃない信念の対談 automaton-media.com/articles/int...

#saekogame girl with the gold cage earring. Might not have chosen the best earring for today though, this ones a bit noisier than expected...

Been playing more indie games this year and doing art of em, so I wanted to do one from Saeko. A pretty interesting game.. Saeko is a bit terrifying 😅 #saekogame #saeko #fanart

late night yui sketch #saekogame 🍒

chio's comfort #saekogame

It's only been a few days since release and... 💥Over 10,000 copies have already been sold!!!💥 Thank you for all of your support! SAEKO: Giantess Dating Sim is available at 10% OFF on Steam, DLsite, and Stove during its launch sale! #saekogame #indiedev #gamedev #pixelart #giantess #datingsim

We worked with @vivionblue-en.bsky.social and made this edgy street-themed t-shirt! Go check it now!

viviON Blue celebrates the launch of the highly-anticipated horror indie game, Saeko: Giantess Dating Sim, with a commemorative t-shirt! ⬇️ Here vivion.blue/44ZHLD0 ✨ EXCLUSIVELY at viviON Blue ✨ #saekogame