- Update – 2026/08/09 - 9 August 2026
【Update Details】 ・Added the ability to edit the restaurant name. ・Fixed an issue where the player's balance would not go below zero when purchasing supplies on credit. Thank you for playing! If you have any feedback, suggestions, or requests, we would greatly appreciate it if you could let us know through a Steam review.
- 【New Menu Items and Features Added】 - 27 July 2026
We released the following update today:・Added two new menu items: “Premium Loin Katsu Set” and “Premium Fillet Katsu Set.” ・Added a “Reset” button to the main menu, allowing players to delete their save data. ・Added “Premium Pork Loin” and “Premium Pork Fillet” to the purchasing screen. ・Added two new raw meat trays.Should you notice any issues or have any requests, please let us know through the Steam Community, reviews, or other feedback channels.
- 【July 20, 2026 Update Notes】 - 20 July 2026
【Improvements】 ・Redesigned the Tab menu UI. 【Bug Fixes】 ・Fixed an issue on the Upgrades screen where the required level text remained visible even after the unlock level had been reached.
- 【New Feature Update】 - 16 July 2026
We have released the following update today.【New Feature】・Added the new “Delivery Robot” upgrade.This robot automatically collects dishes after customers finish their meals and carries them to the sink or dishwasher.【Improvement】・When “Full Screen” is turned OFF in the settings menu, you can now freely resize the game window by dragging its edges with the mouse.If you notice any issues or have any feedback or suggestions, please let us know through the Steam Community or by leaving a review.
- 【New Upgrade Added】 - 13 July 2026
We have released the following update today.【New Upgrade】・Added the new “Dishwasher” upgrade.You can now load multiple dishes into the dishwasher and have them washed automatically.【Bug Fix】・Fixed an issue where interacting with the door of the delivery shelf while holding an item would also trigger the item placement action.In the next update, we plan to add a new upgrade that automatically collects used dishes and carries them to the sink or dishwasher.
- 【About Upcoming New Features】 - 8 July 2026
We are planning to add the following features in future updates.◆ New Upgrades・Dishwasher: Automatically washes dishes.・Dish Collection Robot (tentative name): Collects dishes after customers finish their meal and carries them to the sink or dishwasher.◆ New Menu ItemsWe will continue working on updates to make the game even easier and more enjoyable to play.If you have any requests, such as “I’d like to see this feature added,” please let us know in the comments.
- 【Update Notice】 - 7 July 2026
We released the following update today. 【Improvements】 ・Made it easier to collect dishes by moving the tray onto the counter after customers finish their meal. 【Bug Fixes】 ・Fixed an issue where the cooking penalty for katsudon was not being applied. ・Fixed an issue where the sound effect from cutting meat would continue playing.
- 【Update Notice】 - 6 July 2026
We have released an update today, mainly focused on bug fixes. ■ Update Details 【Bug Fixes】 ・Fixed an issue where the tutorial could be skipped by repeatedly pressing the Space key, even though it was intended to be skipped only by holding down the Space key. ・Fixed an issue where adjusting the SE volume in the settings menu did not affect sounds such as the faucet sound and frying sound. ・Fixed an issue where, after setting the ambient sound and SE volume to 0 in the settings menu and saving, sounds would still play after restarting the game despite the volume being set to 0. ・Fixed an issue where, after purchasing an upgrade and returning to the title screen, only the money would revert to its previous amount while the upgrade remained purchased. 【Improvements】 ・Adjusted the dash speed. ・Cut cabbage can now be discarded. ・Changed the tutorial order so that cabbage preparation is compl…
- 【Update Notice】 - 25 June 2026
We have released an update today focused mainly on bug fixes.■ Update Details【Bug Fixes】・Fixed an issue where the green object ghost would remain visible when focusing on a customer, even though it should have been hidden.・Fixed an issue where dishes could not be placed on the serving tray while focusing on a customer.・Fixed an issue where, if raw meat was placed on the cooking tray and the player attempted to add breadcrumbs, eggs could no longer be added to the tray afterward.・Fixed an issue where bowls could be stacked on plates, even though only dishes of the same type should be stackable.・Fixed an issue where the message “Please wash the dishes.” would appear when trying to place objects that cannot normally be placed on plates, such as trays or eggs, onto a plate across the counter.・Fixed an issue where plates could fall around the sink area and become difficult to see.・Fixed an i…
- Bug Fixes and Improvements Update - 21 June 2026
Thank you for playing Tonkatsu Diner Simulator.We have released an update today mainly focused on bug fixes.■ Update Details【Bug Fixes】・Fixed an issue where customers would move to the self-checkout position when checking out while three or more customers were waiting in line at the register. ・Fixed an issue where eggs could no longer be placed into the cooking tray after proceeding to the next day while meat was still in the tray. ・Fixed an issue where plates that had ingredients on them could no longer be stacked after proceeding to the next day. ・Fixed an issue where repeatedly pressing the checkout button could cause experience points to be gained multiple times. ・Fixed an issue where the camera could still be controlled while the recipe UI was open.【Improvements】・Added an alert UI during katsudon cooking to make it easier to tell when the dish is almost ready. ・Added a rating displ…
- 2026/06/19 Update Notes - 19 June 2026
This update includes the following fixes and improvements: Fixed an issue where the state of objects such as dishes may not be restored correctly when returning to the title screen from the pause menu.
- June 14, 2026 Update Notes - 14 June 2026
This update includes the following fixes and improvements: * Added a support measure for situations where players are unable to buy ingredients and end up in a bankrupt state. Players can now purchase ingredients on credit up to a certain limit, even if they do not have enough money.
- June 12, 2026 Update Notes - 12 June 2026
This update includes the following fixes and improvements: Fixed an issue where dishes could disappear under certain conditions. Fixed an issue where dishes could no longer be placed on the serving tray. Fixed an issue where the Tab menu could be cut off.
- June 10, 2026 Update Notes - 10 June 2026
June 10, 2026 Update Notes This update includes the following fixes and improvements: * Improved frame rate performance * Fixed an issue so that egg trays can now be discarded * Adjusted the interaction detection to make it easier to pick up loin and fillet meat from the Oyakopan * Replaced the product images on the purchasing screen * Moved the Order Monitor and Rice Cooker from the backyard to next to the gas stove to improve usability * Fixed an issue where some text was displayed incorrectly when the language was set to English
- [Fixed] Issue Causing Game Progression to Become Impossible - 7 June 2026
We have released an update that fixes an issue previously reported where, under certain circumstances, players could no longer progress in the game.This update includes the following fixes:• Fixed an issue where dishes could become impossible to pick up in certain situations, preventing further game progression. • Reduced gameplay stuttering caused by frame rate drops during play.We sincerely apologize for the inconvenience and frustration this issue may have caused our players.We will continue working to improve the game and provide a smoother, more enjoyable experience for everyone.Thank you for your continued support of Tonkatsu Diner Simulator.
- [Fixed] Issue Causing Game Progression to Become Impossible - 7 June 2026
This update includes the following fixes: • Fixed an issue where dishes could become impossible to pick up in certain situations, preventing further game progression. • Reduced gameplay stuttering caused by frame rate drops during play.
- [Important] Regarding a Progression-Blocking Bug - 6 June 2026
\We have identified an issue that may prevent players from progressing in the game under certain circumstances.We are currently investigating the cause of this issue and preparing a fix.We sincerely apologize for the inconvenience.We will provide further updates here as soon as we have more information.
- Tonkatsu Diner Simulator is Now Available! - 2 June 2026
Thank you for your continued support.We are excited to announce that Tonkatsu Diner Simulator is now available on Steam!This game was developed by a solo developer, and thanks to the support and encouragement of so many people, we have finally reached this special day.Thank you very much for your support.We will continue to improve and update the game, so we would love to hear your feedback and suggestions.If you enjoy playing the game, leaving a Steam review would mean a lot to us and greatly support future development.I hope you enjoy Tonkatsu Diner Simulator!Thank you for your continued support, and we look forward to bringing you more updates in the future.
