Lost Chapter

About this game

・Story
In the abyss, she is awakened by the cold.
She has nothing to hold on to, as everything is left in the darkness.

The girl moves on with a little light,
and leaves all the choices to you.

Guide her and find her lost self.

・Gameplay
This is a roguelite deckbuilder game where you aim for higher floor while making your own unique deck.
You can get different card or raise your stats by encounter various event and enemies.


・Features
Use card to attack enemy or strengthen yourself during combat.
There will be 40+ type of card where you can build various unique deck like magic-specialized deck and etc.
Althought the starting deck will always be same, you can add up to 30 cards to your deck in your adventure.

Even with same battles and event, you can unlock various H scenes by meeting condition such as having specific debuffs!

Latest news

• Community & Events·15 Oct 2025Official

  Try out SUMMER -14 Days Vacation- Demo On Next Fest!

  SUMMER -14 Days Vacation- Demo is available now on Next Fest! We have TWO girls waiting for you, don't forget to check it out and wishlist! https://store.steampowered.com/app/3975100/SUMMER_14_Days_Vacation_Demo/ ☆Summary It's a day in summer holiday. You recently started living alone in the city, and are beginning to get worn out by the busy days. Noises of the town, complicated relationship with others... Momentarily, your heart yearned for a moment of peaceful rest in a quiet place It made you recall your time back when you live on a small island. Surrounded by nature, living a free life, the time of serenity... Led by the nostalgia, you made a phone call to an old lady running a guesthouse at the island. What came back was a cheerful welcome along with an unexpected favor. 「Our daughters will be on their own for a while, can you look after them?」 This marks the start of the 14 days of your summer break. The beginning of special days with two girls in a nostalgic island. ☆Character Introduction https://clan.fastly.steamstatic.com/images/41349942/918f29572edcb4e697e827cf7f428d132bbbb6aa.png Honoka Amane The elder sister of your childhood friends. She's kind and gentle. She's been helping out the guesthouse since young and is good at cooking. She looks matured to others around her, but she can be spacey at times. After not meeting for a while, she sees you grown up to be so manly, an gets nervous deep inside. https://clan.fastly.steamstatic.com/images/41349942/4e0e62c30f2d1b24f11aa0946855726a4358ceaf.png Hinano Amane The younger sister of your childhood friends. She rarely shows her expressions, and is sometimes absent-minded, but she's been helping her dad in shipwright and has skillful hands. She loves odd things, and sometimes brings back something from abandoned buildings. Her face doesn't show it, but she's happy to get to meet you again. ☆H Scenes https://clan.fastly.steamstatic.com/images/41349942/4f3755f4ced408f92007efa814c11ac998d148e9.png ◆Mini Pixel H Ta...
  Read full article on Community Announcements (info)

• Announcements·12 Oct 2025Official

  SUMMER -14 Days Vacation- Demo is available now!

  https://clan.fastly.steamstatic.com/images/41349942/4c7f2bc3beae15811a3a1ea9a6a7871b831a0fe5.png SUMMER -14 Days Vacation- Demo is available now and will be participating in Next Fest. Let me hear what you think, and don't forget to wishlist! https://store.steampowered.com/app/3975100/SUMMER_14_Days_Vacation_Demo/ ☆Summary It's a day in summer holiday. You recently started living alone in the city, and are beginning to get worn out by the busy days. Noises of the town, complicated relationship with others... Momentarily, your heart yearned for a moment of peaceful rest in a quiet place It made you recall your time back when you live on a small island. Surrounded by nature, living a free life, the time of serenity... Led by the nostalgia, you made a phone call to an old lady running a guesthouse at the island. What came back was a cheerful welcome along with an unexpected favor. 「Our daughters will be on their own for a while, can you look after them?」 This marks the start of the 14 days of your summer break. The beginning of special days with two girls in a nostalgic island. ☆Character Introduction https://clan.fastly.steamstatic.com/images/41349942/918f29572edcb4e697e827cf7f428d132bbbb6aa.png Honoka Amane The elder sister of your childhood friends. She's kind and gentle. She's been helping out the guesthouse since young and is good at cooking. She looks matured to others around her, but she can be spacey at times. After not meeting for a while, she sees you grown up to be so manly, an gets nervous deep inside. https://clan.fastly.steamstatic.com/images/41349942/4e0e62c30f2d1b24f11aa0946855726a4358ceaf.png Hinano Amane The younger sister of your childhood friends. She rarely shows her expressions, and is sometimes absent-minded, but she's been helping her dad in shipwright and has skillful hands. She loves odd things, and sometimes brings back something from abandoned buildings. Her face doesn't show it, but she's happy to get to meet you again. ☆H Scenes https://cl...
  Read full article on Community Announcements (info)

• Announcements·9 Oct 2025Official

  SUMMER -14 Days Vacation- is coming soon!

  https://clan.fastly.steamstatic.com/images/41349942/4c7f2bc3beae15811a3a1ea9a6a7871b831a0fe5.png SUMMER -14 Days Vacation- will be participating in Steam Next Fest, so make sure to check it out! https://store.steampowered.com/app/3975100/SUMMER_14_Days_Vacation_Demo/ ☆Summary It's a day in summer holiday. You recently started living alone in the city, and are beginning to get worn out by the busy days. Noises of the town, complicated relationship with others... Momentarily, your heart yearned for a moment of peaceful rest in a quiet place It made you recall your time back when you live on a small island. Surrounded by nature, living a free life, the time of serenity... Led by the nostalgia, you made a phone call to an old lady running a guesthouse at the island. What came back was a cheerful welcome along with an unexpected favor. 「Our daughters will be on their own for a while, can you look after them?」 This marks the start of the 14 days of your summer break. The beginning of special days with two girls in a nostalgic island. ☆Character Introduction https://clan.fastly.steamstatic.com/images/41349942/918f29572edcb4e697e827cf7f428d132bbbb6aa.png Honoka Amane The elder sister of your childhood friends. She's kind and gentle. She's been helping out the guesthouse since young and is good at cooking. She looks matured to others around her, but she can be spacey at times. After not meeting for a while, she sees you grown up to be so manly, an gets nervous deep inside. https://clan.fastly.steamstatic.com/images/41349942/4e0e62c30f2d1b24f11aa0946855726a4358ceaf.png Hinano Amane The younger sister of your childhood friends. She rarely shows her expressions, and is sometimes absent-minded, but she's been helping her dad in shipwright and has skillful hands. She loves odd things, and sometimes brings back something from abandoned buildings. Her face doesn't show it, but she's happy to get to meet you again. ☆H Scenes https://clan.fastly.steamstatic.com/images/41349942/d904d2...
  Read full article on Community Announcements (info)

• Announcements·30 Sept 2025Official

  Steam Autumn Sale has begun!

  https://clan.akamai.steamstatic.com/images/41349942/d535900033a6c8278849bc16f63ab98673495790.png Autumn Sale 2025 is now LIVE! Don't miss this chance to check out our lineup! https://clan.akamai.steamstatic.com/images/41349942/5171aa26d71a0260cb9eb11ad6c89bc00e1fbffc.png 20% OFF ・Dusk City ・Mage Kanade's Futanari Dungeon Quest ・Kawaii -Ryona Trap Dungeon- ・Winter ~Life in the Countryside~ ・Lost Chapter ・Lost Chapter -With You- https://clan.akamai.steamstatic.com/images/41349942/e2de3b31bbff369fc50bd3c6e644301af2be644e.png 30% OFF ・Busty Milf and Summer Country Sex Life ・Lazy Angel Mika ・Alchemist Tris's Desire ・Summer~Life in the Countryside~ ・Summer~Life in the Countryside~ +Outing ・Milf Selena and the Dungeon of Magic Stones https://clan.akamai.steamstatic.com/images/41349942/4deb8cc9a0ff0d13b46988a1ca008bd1fe93d08f.png 50% OFF ・A Lose Hero in the Castle of the Succubi ・Aria and the Secret of the Labyrinth ・Dominating eyes ・My Naughty Summer Vacation ~Days in Countryside and Memories of Summer~ ・Saint Gear Force ・Blazing Priestess Shizune ・Brave Princess Milia ・Fighting Magical Girls RPG Women Defense ・Phantom Thief Mew's Secret Prima ・The Cursed Tower of Lust https://clan.akamai.steamstatic.com/images/41349942/7d5803d8188ce17b0d4ee496ee26aafa717ac479.png Dieselmine Int'l Special Bundle https://store.steampowered.com/bundle/38986/DIESELMINE_INTL_SPECIAL_BUNDLE/ To stay up to date with our releases, be sure to follow us on: ・X ・Steam Publisher Homepage ・Discord ・Ci-en ・Facebook
  Read full article on Community Announcements (info)

• Announcements·4 Sept 2025Official

  Winter ~Life in the Countryside~ is now with Thai language support!

  https://clan.fastly.steamstatic.com/images/41349942/1beed3569fb64b2eb4bca851efd860a60111e948.png Hope more of you guys will get to enjoy this masterpiece♪ https://store.steampowered.com/app/3289580/Winter_Life_in_the_Countryside/ It's your winter vacation. You once again took a trip to the countryside to visit your cousin, Hazuki. Things must have changed a lot since you met her last summer. How has she been doing? Your thoughts wander as you get ready for another trip to the contryside. ☆Character Introduction https://clan.fastly.steamstatic.com/images/41349942/98bbf5840dbc27d7761443bea8f63c88899aeaa5.png Natsuhara Hazuki Your cousin and childhood friend. It's been a while since you met her last summer. She may not look so approachable, but that's only because she's still exploring your relationship with you and her. She doesn't swim in winter, so her tanlines are gone, and her hair grew longer. She's no longer reluctant in bodily contact, and couldn't forget the days with you back in summer. ☆H Scenes https://clan.fastly.steamstatic.com/images/41349942/af3986560f874f0a9c40d3bbe3974a644bed73d7.png https://clan.fastly.steamstatic.com/images/41349942/081a74acbc9f2ea9ac9bf9c0c94bd06c6d24c796.png ☆Game System https://clan.fastly.steamstatic.com/images/41349942/d80aa7343c2a956b1a8ba82c9788de4a0338dc97.png ・Bring Hazuki around and have sex freely anywhere ・Fully voiced ・Various costumes to change into, which will also be reflected in pixel H scenes ・Purchase items to unlock more H scenes ・Abundance of high-quality HCG ・Special pixel H animations unlocked through certain conditions ・H Status window with all your sexual records with Hazuki To stay up to date with our releases, be sure to follow us on: ・X ・Steam Publisher Homepage ・Discord ・Ci-en
  Read full article on Community Announcements (info)