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The update released on January 4, 2025 (v04.01.2025), for Yandere Simulator
was primarily a bug-fixing and refinement build following the significant additions made during the 10th-anniversary period.
Below is a breakdown of the key content and fixes included in this version based on the development logs: 🛠️ Key Fixes & Refinements
Corpse Awareness Bug: Fixed a logic error where students who spotted a corpse and fled to their classroom would "psychically" detect if the player concealed the body from across the map, leading to an unfair apprehension.
Animation Glitches: Resolved issues where the protagonist would continue performing animations (like smothering or mopping) even after a "Game Over" screen had appeared.
Bucket Interaction: Fixed a bug that caused the bucket’s button prompt to break if a player tried to refill it while simultaneously spilling water out of it.
Custom Mode Textures: In Custom Mode, male Sports Club students with non-default skin colors no longer have "stretched" skin textures when changing into swimming trunks.
1980s Mode Matchmaking: Addressed a pathfinding issue where Chigusa would get stuck inside the shower building instead of leaving a note in her suitor's locker. 🎮 Gameplay Performance
Frame Rate Optimization: The update continued efforts to address the game's historically slow frame rates. Players experiencing lag are encouraged to adjust settings such as draw distance and shadows in the settings menu.
System Requirements: To run this version smoothly, a minimum of 8 GB RAM and a 2.4 GHz processor are recommended. 📅 Development Context
As of early 2025, the game is still in active development. YandereDev has estimated that the final, complete version of the game—including all ten rivals—is targeted for release between late 2026 and early 2027. 2025 April Fools' Joke | Yandere Simulator Development Blog
The v04.01.2025 update for Yandere Simulator (often referred to as the January 4th, 2025 build) was a specialized technical release following the significant "New Year" content drop. While earlier builds in the month introduced sweeping gameplay features, this specific version focused on hardware compatibility and Custom Mode stability. Key Technical Improvements
According to the Yandere Simulator Wiki, the primary focus of the v04.01.2025 build was expanding hardware support for players using third-party peripherals. Yandere Simulator v04.01.2025
Controller Support: The game was updated to natively detect controllers from the manufacturer 8BitDo (specifically the "8BitDo Ultimate C 2.4G Wireless Controller"). The update included dynamic button prompts that automatically refresh based on the detected device.
Backup Systems: A new "BACKUP COPIES" folder was introduced within the StreamingAssets/JSON directory. This system was designed to safeguard player-modified JSON files in Custom Mode, preventing data loss during game crashes or improper edits.
Enhanced Documentation: The Event IDs text file was overhauled with clearer instructions. This was specifically aimed at the modding community, explaining how to properly integrate custom voice lines into in-game events. Major Features from the January 2025 Period
While the v04.01.2025 build was a "bug-fix" follow-up, it solidified several massive features introduced just days prior in the January 1st Big Update:
Custom Mode Expansion: Players gained the ability to decide a student's reputation, set specific student tasks, and even toggle club accessories (like the Science Club's goggles) on or off for any character.
Visual Enhancements: The "Invert Hair" feature allowed players to horizontally flip any student's hairstyle. This build also added physics to Protagonist Hairstyle #184, preventing it from clipping into the character model while running.
1980s Mode Content: Five new "Schoolday" music tracks (#7 through #11) were added to the 1980s Mode, bringing 45 total variations based on school atmosphere and player sanity.
Custom Mode Cutscenes: To save development time on minor scenes, the Yakuza abduction cutscene in Custom Mode was transitioned to an audio-only format to prevent visual inconsistencies with customized rivals. Performance and Bug Fixes
The v04.01.2025 update addressed several critical errors reported by the community during the first few days of the year.
Interaction Fixes: Resolved a bug where certain laptop touchpads without "left-click" zones could not trigger the camera. The tutorial was updated to inform players they could use Left Ctrl as an alternative.
Persona Logic: Fixed an issue where male students would react to the death of Chigusa (the 1980s rival) by engaging in a physical struggle instead of using pepper spray, which was inconsistent with their Student Council AI.
UI Adjustments: Corrected a visual bug where the "Total Playtime" counter on the Content Checklist screen would occasionally fail to display or reset incorrectly. The update released on January 4, 2025 (v04
For players looking for the latest build or additional details on upcoming content, the Official Yandere Simulator Development Blog remains the primary source for progress reports and changelogs. Yandere Simulator Development Blog
The April 1st, 2025 update for Yandere Simulator introduced several functional mechanics, character physics updates, and an April Fools' themed feature. This build focused on refining existing assets and improving the "Custom Mode" experience while adding new interactive elements to the school environment. Key Gameplay Features
Chainsaw Implementation: The chainsaw was made fully functional with unique animations. It also received its own dismemberment animation and sound effects, distinct from the circular saw.
Daily Quests (April Fools'): A "Daily Quests" sidebar was added as an April Fools' joke, allowing players to level up by completing mundane tasks like mopping blood or killing students. While later moved to the Easter Egg menu (accessible by pressing 'N'), it initially served as a parody of modern gaming trends.
Expanded Customization: Players can now choose their characters' school uniforms and customize Senpai's appearance before a "Quick Start" option becomes available. Additionally, Ryoba’s "Speed Up Time" polaroid now features Jokichi instead of a solid black image. Environment & NPC Improvements
Interactable Elements: A bottle of bleach was added to the school pool’s pump room, placing it near a bucket and mop to streamline evidence cleanup for players using that area.
Hair & Accessory Physics: Physics were added to the hair of NPCs Kenko and Maka. Later in the month, physics were also applied to the scarves of Study-kun A, Study-kun B, and Shiromi.
Updated Cutscenes: The cutscene where Togo warns Ryoba about delinquents was upgraded from text on a black screen to a fully animated sequence. Technical Fixes & Optimizations
UI Bug Fixes: A workaround was implemented for players with a 16:10 aspect ratio to prevent UI elements from going off-screen.
Animation Cleanup: A bug where the protagonist would continue mopping during a "Game Over" screen was resolved.
Custom Mode Stability: Fixed a bug where the "Invert Hair" feature failed when generating student portraits. 2025 April Fools' Joke | Yandere Simulator Development Blog
April 1st, 2025 update for Yandere Simulator was primarily an April Fools' joke build that accompanied a series of bug fixes and minor adjustments to the game's mechanics Key Fixes & Updates Animation Fixes The "Pool Void" Glitch: Fixed
: A bug where the protagonist would continue a mopping animation during a "Game Over" screen was resolved. Rival Adjustments
: Fixed an issue where she would get stuck in the shower building when attempting to leave a note in a suitor's locker during matchmaking.
: Corrected a visual bug where her eyebrows would stretch out if brought to school as a mind-broken slave. Kill Methods
: A bug where any student killed via the "Freeze to Death" method mistakenly counted as the rival being killed that way was fixed. Environment & Custom Mode Pathfinding issues in the Occult Club
, where characters got stuck on the curved back table, were addressed. The "Invert Hair" feature in Custom Mode was fixed to properly generate student portraits.
Floating items, such as Amai’s bento mid-investigation, were grounded. Developer Insights
The developer used this period to emphasize "Transparency," discussing the challenges of long-term development and addressing negative feedback, such as the widely disliked "Increased Saturation" filter, which was later removed. Additionally, a "Lost Build" from the game’s earliest prototype days was released to fans around this time as a bonus. Yandere Simulator Development Blog
For the most recent official builds and full patch notes, you can visit the Yandere Simulator Development Blog Official Website for the current rival? 2025 April Fools' Joke | Yandere Simulator Development Blog
The April 1, 2025 build (v04.01.2025) of Yandere Simulator, framed as an April Fools' joke, introduced refined 16:10 aspect ratio support, streamlined UI, and updated character physics. While delivering quality-of-life improvements, the update maintained the game's focus on minor polishing over major content additions. For more details, visit YandereDev Blog. 2025 April Fools' Joke | Yandere Simulator Development Blog
No Yandere Simulator update is complete without a novel-length bug fix list. Key fixes include:
You play as Ayano Aishi (Yandere-chan), a high school girl who has fallen in love with Senpai (Taro Yamada). Eliminate 10 rival girls over 10 weeks without getting caught, so you can confess your love.
Lose conditions:
Many assumed the 1980s mode—which tells Ryoba Aishi’s story—was complete. Version 04.01.2025 adds an Endless Mode variant to this timeline.