Steam app 1585220 · updated 12 Sep 2026, 21:41 UTC
Melatonin is a rhythm game about dreams and reality merging together. It uses animations and sound cues to keep you on beat without any intimidating overlays or interfaces. Harmonize through a variety of dreamy levels containing surprising challenges, hand-drawn art, and vibrant music.
478 hourly samples, with the daily peak drawn over them. Weekends are shaded.
46 months, December 2022 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 302 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 176 hourly samples. Each dip is a night. Weekends are shaded.
Melatonin was released on 15 Dec, 2022.
| Language | Full audio |
|---|---|
| English | ● |
| French | ● |
| German | ● |
| Japanese | ● |
| Korean | ● |
| Portuguese - Brazil | ● |
| Simplified Chinese | ● |
| Spanish - Latin America | ● |
| Traditional Chinese | ● |
| Vietnamese | ● |
A blank audio cell means full audio was not marked in the returned language list.
14 achievements in total.
32 developer announcements, Nov 2022 to Dec 2024 · times in UTC
It has officially been 2 years since the release of Melatonin on Steam!! 🥳🎈 To celebrate, check out the newly released Deluxe OST! This includes ALL the music from Melatonin, as well as 4 bonus tracks! Thank you to everyone who has…
david huynh- fixes lock-up when viewing workshop in steam browser
Patch notes- Added: you can use up/w and down/s in the level editor to move the cursor faster - Added: when you re-edit your level, you will be returned to the previous cursor position - Added: when increasing the bar length and start buffer, hold…
Patch notesHalf Asleep is proud to announce that it has has partnered up with iam8bit to release a Melatonin 2xLP vinyl record which is now available to pre-order on the iam8bit store! This really is a dream come true so thank you for all your support…
david huynh- Fixes: customized action key not appearing in level tutorial messages - Fixes: masking issue in "Future" - Fixes: animation bug in "Shopping" - Fixes: song length issue in level editor - Adjustment: opacity of glitches in "Future"…
Patch notesV-sync option added to display settings
Patch notes- Fixes custom music not playing for some people with slower hard drives - Fixes quit game menu issue - Fixes Steam Workshop downloaded level transition
Patch notesFixes issue with custom music not playing on downloaded levels (Windows and Mac)
Patch notesYou can now play downloaded levels on the Mac version of Melatonin.
Patch notesHey everyone, I'm excited to announce that the Steam Workshop support for Melatonin is now live! You can visit the official Melatonin Steam Workshop page to browse user created levels made by the community. Access your downloaded levels…
david huynhThe latest build of Melatonin allows PC players to use their own song files in the Melatonin Level Editor! This feature just requires you to know the exact tempo of the song you selected. Other features and ways to share levels with the…
david huynh- Fixes issue when editing mashups - Fixes typo with Japanese language option
Patch notesHappy to announce that Melatonin is now playable in 9 additional languages which include Chinese (simplified and traditional), Japanese, Korean, Vietnamese, French, German, Spanish, and Portuguese!
david huynh- Fixes button name not appearing in practice dialog for a level in Night 3
Patch notes- Improves text clarity and aliasing in preparation for upcoming localization update - Adds map animations to chapter 3 and 4
Patch notesSome bugs have been fixed! - Fixes a save corruption bug - Hides mouse cursor and addresses cursor flickering (Mac) - Fixes song file for low tempo version of night 1's mashup - Fixes issue with cancelling hold/release sequences in editor
Patch notesAfter some robust testing on the Half Asleep Discord server, the level editor now includes the ability to edit each mashup in the game! You can switch between different dream worlds using the same tools already present in the game. Just…
david huynhJust wanted to share with you all that Melatonin is now officially Steam Deck Verified! It has always been fully compatible with the Steam Deck but now there's a nice little green checkmark in case you weren't sure.…
david huynhFeatures - Adds a calibration tool that helps you determine your offset (only available on title screen) Bugs - Fixes bug in "Future" that causes aliens to get lost in edited levels
Patch notesAdds native PS5/DualSense controller support including displaying the correct button prompts/visuals when necessary.
Patch notesBug fixes: - Fixes various save corruption bugs that prevented the game from booting - Fixes issue causing editor customization menu to not close General: - Updates wording in preparation for different language options
Patch notesBug fixes: - Fixes various save corruption bugs that prevented the game from booting - Fixes issue causing editor customization menu to not close General: - Updates wording in preparation for different language options
Patch notes- Fixes issue causing achievements to not trigger on macOS
Patch notesBugs - Fixes: game crashing if you skip practice at the same time as you miss with "perfects only" mode on Editor - Time: you can use the extended sequences seen in the core level - Tech: you can speed up the tempo - Future, Stress, Money…
Patch notesAdds a "perfects only" setting that can be enabled under "gameplay". This will restart the level anytime you get an early, late, or miss when you're going for a perfect score.
Patch notesFixes bug where tutorial achievement gets triggered sometimes when there was an early or miss Fixes bug where achievements sometimes don't trigger (please leave comment or post in discussions if you are still having this problem) Fixes bug…
Patch notesAdds a "perfects only" setting that can be enabled under "gameplay". This will restart the level anytime you get an early, late, or miss when you're going for a perfect score.
Patch notesFixes bug where tutorial achievement gets triggered sometimes when there was an early or miss Fixes bug where achievements sometimes don't trigger (please leave comment or post in discussions if you are still having this problem) Fixes bug…
Patch notesMac: Scoring in the hard mode for "Exercise" was bugged. Now it will be correctly scored.
Patch notesWindows: Scoring in the hard mode for "Exercise" was bugged. Now it will be correctly scored.
Patch notesAvailable on PC/Mac for $14.99 USD. Get it within the new few weeks for a limited time 10% off discount! Feel free to report bugs and leave feedback on Steam discussion forums or post in the Offical Discord Server. It helps a lot if you…
david huynhI'm excited to announce that Melatonin be releasing on December 15th on PC for $14.99 USD! There will also be a temporary launch discount of 10% off. The release date for the previously announced Nintendo Switch version will be coming very…
david huynhWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | Melatonin.exe | windows | ||
| Launch | Melatonin.app | macos |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
gameinstall | . | *.json |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG