IMHO.

Single-player games like NEXT:THE PORTOPIA SERIAL MURDER CASE

Below are 16 single-player Steam games similar to NEXT:THE PORTOPIA SERIAL MURDER CASE, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like NEXT:THE PORTOPIA SERIAL MURDER CASE page.

Ranked picks

  1. 1
    Kamiya Detective Agency: High School Girl Vanished in The Summer — Steam game cover

    Kamiya Detective Agency: High School Girl Vanished in The Summer

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    A mystery set in Fukuoka, Japan. Former cop Kengo Kamiya and assistant Hikaru tackle a high school girl's disappearance. A "Photoreal Novel" fully utilizing actual photos and AI. Enjoy snappy banter and unexpected twists in this simple, choice-driven mystery visual novel.

    2027IndieAdventureSingle-playerSimilar games →
  2. 2
    Beware of the Cartographer! — Steam game cover

    Beware of the Cartographer!

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    Map a mysterious land during the Age of Enlightenment. Draw the border between two warring kingdoms. Meet the locals. Juggle their demands with the requirements of your mission. Ethical dilemmas, secret plots, strange phenomena… will you be able to bring peace back to the land?

    IndieAdventureSingle-playerSimilar games →
  3. 3
    Last Night Last Call — Steam game cover

    Last Night Last Call

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    Can you solve a murder with only your wits, cocktail shaker, and silver tongue? Last Night Last Call is a narrative detective game where you mix cocktails, interrogate suspects, gather clues, and shape relationships to solve five murders. Every customer has something to hide.

    IndieAdventureRPGSingle-playerSimilar games →
  4. 4
    The Test: Secrets of the Soul — Steam game cover

    The Test: Secrets of the Soul

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    You will answer a series of questions that will reveal things from deep within. Some will be uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and are you SURE you want the answers you seek? For it is time to unlock "Secrets of the Soul..."

    2023IndieAdventureSimulationFreeDeck VerifiedSingle-playerSimilar games →
  5. 5
    Pentiment — Steam game cover

    Pentiment

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    Step into a living illustrated world in a time when Europe is at a crossroads of great religious and political change. Walk in the footsteps of Andreas Maler, a master artist who finds himself in the middle of murders, scandals, and intrigue in the Bavarian Alps.

    2022AdventureCasual19.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Love, Money, Rock'n'Roll — Steam game cover

    Love, Money, Rock'n'Roll

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    Love, Money, Rock'n'Roll: the romanticism of the Eighties, mystery and intrigues, betrayal and sacrifice, hatred and passion — all this and more in the new game from the creators of the legendary visual novel Everlasting Summer!

    2022IndieAdventureCasual9.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Sarawak — Steam game cover

    Sarawak

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    A short literary mystery game set in Oxford and Borneo

    2021IndieAdventure4.99 USDSingle-playerSimilar games →
  8. 8
    Expelled! — Steam game cover

    Expelled!

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    A School Prefect has been pushed out of a window, and everyone's blaming YOU. Can you find the culprit - or someone to take the fall - before you get EXPELLED? Mystery with a wicked twist, from the creators of Overboard!, 80 Days, Heaven's Vault and A Highland Song.

    2025IndieAdventureRPG14.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    KUUKIYOMI: Consider It — Steam game cover

    KUUKIYOMI: Consider It

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    The world, THIS IS JAPAN.

    2020IndieSimulationCasual4.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Japanese Rural Life Adventure — Steam game cover

    Japanese Rural Life Adventure

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    Japanese Rural Life Adventure is a relaxing slow-life simulation where you can experience the charm of traditional Japanese countryside living, all in a beautifully crafted pixel-art world.

    2026Simulation24.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    KUUKIYOMI 2: Consider It More! - New Era — Steam game cover

    KUUKIYOMI 2: Consider It More! - New Era

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    New situations added. A game that determines whether you have the skills to be considerate in this new world.

    2020IndieSimulationCasual4.99 USDSingle-playerSimilar games →
  12. 12
    Hero must die. again — Steam game cover

    Hero must die. again

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    The hero defeated the demon Guile, but lost his life in the process. Given five more days to put his affairs in order, guide him to the best possible funeral in this anti-RPG where he grows weaker.

    2020RPG9.99 USDSingle-playerSimilar games →
  13. 13
    G-MODEアーカイブス01 フライハイトクラウディア — Steam game cover

    G-MODEアーカイブス01 フライハイトクラウディア

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    A JRPG whose story takes place in the sky!

    2021RPG4.99 USDSingle-playerSimilar games →
  14. 14
    G-MODEアーカイブス09 フライハイトクラウディア2 — Steam game cover

    G-MODEアーカイブス09 フライハイトクラウディア2

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    Fulfilling a promise made a long time ago, to a faraway place in the sky.

    2021RPG4.99 USDSingle-playerSimilar games →
  15. 15
    OU — Steam game cover

    OU

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required. Shares Adventure with NEXT:THE PORTOPIA SERIAL MURDER CASE.

    "Between something and someone." U-chronia is a mysterious world constantly changing like a book whose pages are flipped out of order. You will wear the shoes of OU, the protagonist, to live through this game-shaped experience—without knowing what it really is.

    2023Adventure19.99 USDDeck PlayableSingle-playerSimilar games →
  16. 16
    KUUKIYOMI 3: Consider It More and More!! - Father to Son — Steam game cover

    KUUKIYOMI 3: Consider It More and More!! - Father to Son

    Single-player alternative to NEXT:THE PORTOPIA SERIAL MURDER CASE — playable solo, no multiplayer required.

    Third time's a charm. This is a game that checks your ability to be considerate to attain happiness.

    2021IndieSimulationCasual4.99 USDSingle-playerSimilar games →