In-game event12 Aug 2026Version 0.36: Custom KoiKoi Rules in Online BattlesThis update lets the room host configure rules equivalent to Custom KoiKoi when creating a Private Room in Online Battle. Other Match Types Keep Their Existing Rules Online matches outside Private Rooms (Quick Match / Friends Match) will continue to use the following fixed rules: · Rounds = 4 · Hand Cards = 8 · Field Cards = 8 · Hanami/Tsukimi = 5pts · KoiKoi Calls = Once · KoiKoi Scoring = Sta…
We have added a new game mode, "KoiKoi - Custom," which lets you customize the rules of Koi-Koi. Settings Setting Description AI Select your opponent's AI behavior Rounds Select the number of rounds Hand Cards Select the number of cards in each player's starting hand (6/8/10) Field Cards Select the number of cards in the starting field: · When Hand Cards is not set to 10: 6/8/10/12 · When Hand…
We're currently considering adding a new game mode, "KoiKoi - Custom," that will let you customize the rules of koi-koi. The customization options currently under consideration are: · Opponent difficulty: Normal / Hard · Number of rounds: 2 / 4 / 6 / 12 · Cards in the starting hand: 6 / 8 / 10 · Cards on the table at the start: 6 / 8 / 10 / 12 (6 or 8 when starting with 10 cards in hand) · Sake…
This update applies only to the macOS and Linux versions. On these platforms, the game uses SDL2 to render a 640×400 texture to the screen at 60 FPS. We discovered that the texture buffer (framebuffer) was incorrectly allocated for only 399 rows (640×399), and have fixed the issue. This bug could cause crashes and other problems. We believe this update resolves them, but since we do not have ac…
This update includes the following changes: · Added new Hana Klo achievements · Improved rendering performance in the Arcade Mode map scene New Hana Klo Achievements Three new achievements have been added to Hana Klo, based on your total accumulated EXP: · Beginner — Reach 50,000 total EXP · Intermediate — Reach 100,000 total EXP · Advanced — Reach 200,000 total EXP I considered adding achievem…
In this update, we've added a new Experience System to HanaKlo, giving players a greater sense of long-term progression the more they play. You can check your current experience on the results screen after clearing a game of HanaKlo. Experience is calculated based on the following factors: · Clear Count · Best Time · Best Moves · Yaku Count · Total Play Time Each game mode (Assist / Standard /…
In this update, Hana Klo has been divided into three play modes: Assist , Standard , and Expert . Mode Description Assist Highlights all valid destinations for the card under your cursor. Standard The original gameplay mode. Expert Hides the month number (1–12) and card value (1 / 5 / 10 / 20) shown in the upper-left corner of each card. Assist Mode Highlights all valid destinations for the car…
Battle Hanafuda plays great on Steam Deck. Key Features: · Optimized for the Steam Deck's native 1280×800 display · 32×32 pixel-based font design for excellent readability on the handheld screen · Full gamepad and touchscreen support — no mouse or keyboard required · On-screen prompts match the Steam Deck's ABXY button layout (e.g. "Press \ Button") · Native Linux support — no Proton required ·…
In this update, we've made several gameplay adjustments and added new features for Hana Klo. · Updated the stacking rules for Rows · Added yaku detection for Slots · Adjusted when the timer starts · Added a Leaderboard · Added an in-game Rule Book 1. Updated the stacking rules for Rows Before After Stacking Kasu cards on Kasu cards was prohibited. Stacking cards of the same category (Kasu / Tan…
Content Added & Changes This update includes the following new content and improvements: · Added Hana Klo (beta) to Free Play · Added Stage 5 Introduction to the Music Room · Improved the Free Play navigation flow Hana Klo (beta) Hana Klo (Hanafuda Klondike) is a solitaire (single-player card game) played with Hanafuda cards. Just like traditional Klondike played with standard playing cards, th…
This update includes the following changes: · Added the Stage 5 theme, "Reigen's Theme" · Reorganized the Free Play menu · Improved the default leaderboard page behavior 1. Added the Stage 5 Theme: "Reigen's Theme" Stage 5 features a horror-themed setting. So I composed a ghost-inspired theme for it. Although Stage 5 has not yet been implemented in Arcade Mode, you can already listen to the tra…
This mini update includes several improvements, such as smoother card animations and additional map details. · Improved card movement (transition) · Added the ship (Kan'ei Maru) NPC to the road between Stage 1 and Stage 2 · Other minor fixes (1) Improved Card Movement I've adjusted the initial acceleration of card animations based on the distance between the starting and ending positions. Cards…
In this update, Oicho-Kabu's "Test Mode" has been promoted to "Free Play" . Along with this change, we have added new achievements and a leaderboard. New Achievements · Triple Arashi Win with the special hand "Triple Arashi" (months other than April and September) in Oicho-Kabu. · Quadruple Arashi Win with the special hand "Quadruple Arashi" (April or September) in Oicho-Kabu. · Hanami Sake Win…
In this mini update, we've made several improvements to Oicho-Kabu (Public Beta). · Added the new winning hands "Hanami-Sake" and "Tsukimi-Sake" · Added a replay confirmation after the game ends · Fixed minor issues Added "Hanami-Sake" and "Tsukimi-Sake" We have added the new hands "Hanami-Sake" and "Tsukimi-Sake", which are formed by combining the September Seed card (Sake Cup) with either the…
We've added a Public Beta for Oicho-Kabu, a bonus game planned for Stage 4 (Bonus Stage) of Arcade Mode, so you can try it out ahead of its full implementation. How to Play You can access it from "\ Oicho Kabu" on the title screen. Please note that this mode is currently a test version, and its rules and balance may change in future updates. At the moment, we plan to remove this menu option onc…
We are currently developing "Oicho-Kabu," the bonus stage for Stage 4. Oicho-Kabu is a traditional Japanese card game that feels somewhat like a cross between Baccarat and Blackjack, played with Hanafuda cards. *Since the game only uses the numbers 1 through 10, it can also be played with a standard deck of playing cards. We have uploaded an unlisted YouTube video showing the current work in pr…
Arcade Mode scores were incorrectly being submitted to the following leaderboards. This issue has now been fixed. · Stage 1 → Normal / 4 Rounds · Stage 2 → Normal / 4 Rounds · Stage 3 → Normal / 6 Rounds
This major update adds "Arcade Mode β". The full version (ver1.00) is planned to include a total of 8 stages. In this beta version, stages 1 through 3 are currently playable. Arcade Mode Rules (Beta) · When you win a stage, the difference between your score and your opponent's score is added to your money (y). · If you lose a stage, you can continue by spending a continue cost (cc) from your mo…
This update includes bug fixes and a small mini-update. *Arcade Mode has not been implemented yet. The following issues have been fixed: · White noise could sometimes be mixed into sound effects during playback · On Windows, the game could still be controlled even when the window was in the background (out of focus) In addition, a new "KoiKoi Rule" option has been added to the "Configuration" m…
The development team has now completed up to Stage 2 of Arcade Mode. Once Stage 3 is finished, we plan to release the Arcade Mode beta as a major update. Today, we'd like to share an early look at gameplay footage from the mode currently in development. Arcade Mode is structured around the following gameplay flow: · Story-driven ADV-style scenes (“Chaban”) · Hanafuda matches · Retro RPG-style m…
In this update, I added “Stage 3 Boss ~ Yamamoto’s Theme” to the Music Room . (Yamamoto image board) This track ended up becoming a rather unusual piece. Its structure is roughly: · Intro : Presents the “festival music” motif with a woodwind solo · Main Theme : Development of the intro motif · Main Theme (2nd pass) : Adds a higher melody using counterpoint · Outro : A cadenza-style variation of…
In this update, we’ve added a new short-loop track, "Kotaro's Theme #2 ~ Let's Go to Izumo," which plays during map movement in Arcade Mode. Arcade Mode is designed as a journey from Edo (Tokyo) to Izumo (Shimane), where you defeat bosses across different regions while progressing toward the final destination. This new track is an arrangement of "Kotaro's Theme #1" and is about one minute long.…
I’m currently working on improving the FM sound quality for the next update. As part of this effort, I set up a real hardware playback environment using a board called “Project RE:birth,” which allows me to run actual YM2612 FM sound chips. Using Battle Hanafuda’s music data, I compared: · The current emulated audio · The real hardware output (via Project RE:birth) After analyzing the waveforms…
We’ve released an update that improves startup speed and adds a new boss track. Main changes in this update: · Removed the startup sequence to speed up game launch · Fixed a mouse input issue when the game is running in the background (macOS / Linux) · Added a new BGM track: "Stage 2 Boss ~ Sasuke's Theme" Below is a detailed explanation of each change. Removed Boot BIOS startup sequence In pre…
This update includes the following changes: · Numpad input support · FM sound improvements · Channel mute feature (Music Room) · Added "Stage 1 Boss ~ Tsunayoshi's Theme" (Music Room) Numpad Input Support In arcade-style hanafuda games, mahjong control panels are commonly used. To make Battle Hanafuda feel more "arcade-like", I have added support for numpad input, which closely resembles that s…
This update includes the following two improvements: · Improved audio quality of FM sound (YM2612 / OPN2) · Added Kotaro's Theme (Music Room) FM Sound (YM2612 / OPN2) Audio Improvements We have implemented a post amplifier (post amp) and improved sound quality by applying DC cut. As a result, we are now using settings that more closely emulate the sound of real FM hardware. However, please note…
In this update, we have added the following features: Music Room You can now browse and preview all tracks included in Battle Hanafuda (FM sound / YM2612), with a keyboard-style visual preview. Currently, the development team is working on Arcade Mode , with a strong focus on composing additional music for it. My composition speed is not particularly fast — sometimes a track can be completed in…
In this update, we have added two new modes: Hard Mode and No-Sake Mode . · Hard Mode : Play against a Hard AI designed to achieve “human-level strength” without any form of cheating · No-Sake Mode : Play under a ruleset without the Sake Cup Originally, this update was scheduled for mid-April, but it has been slightly moved forward. The reason for this change is explained in the No-Sake Mode se…
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Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.