A downloadable game for Windows












WARNING: This game contains loud noises and flashing lights. Please do not play if you have photosensitive epilepsy.

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Join Sonic the Hedgehog as he experiences a not-so-average Sunday in On a Sunday, a slice-of-life fangame set in the Sega Sonic universe with a few twists and turns to keep you on your toes.

Inspired by games like Doki Doki Literature Club and Undertale, it features:

• A character-driven story involving hand-drawn sprites

• A humorous atmosphere

• Elements of surrealism and psychological horror

• Extended interactions with Amy, Cream, and Knuckles

• Music from the games, as well as a few original sounds

• Roughly 5-8 hours' playtime

• Two branching paths and a handful of alternate choices

• Various secrets & Easter eggs, including randomized events

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BONUS: Did you know you can interact with Sonic in the name prompt by typing specific phrases? Give it a try! 

To start you off, here is a selection of prompts that will trigger a unique reaction. (Note: please use proper spacing and capitalization.)

  • stereo
  • stereo 2
  • stereo 3
  • stereo 4
  • stereo 5
  • gallery
  • do you like manga
  • do you like visual novels
  • do you like Sega games
  • don't trust the cakes Vanilla bakes
  • faker
  • high-five
  • how many prompts are there
  • knock knock
  • I'm hungry
  • I'm thirsty
  • I love you
  • I steal your gloves
  • I steal your identity
  • I steal your shoes
  • I want a hug
  • let's play a board game
  • let's play 20 questions
  • let's play video games
  • let's race
  • let's watch TV
  • pizza party
  • pool party
  • stop hitting yourself
  • teach me how to spindash
  • tell me a joke
  • tell me a better joke
  • tell me a dirty joke
  • Who?
  • Who are you?
  • Why is Eggman faster than you?
  • updog
StatusReleased
PlatformsWindows
Rating
Rated 5.0 out of 5 stars
(1 total ratings)
Authorskaruresonic
GenreVisual Novel
TagsComedy, Creepy, Cute, Fangame, Feel Good, Hand-drawn, Narrative, Ren'Py, Slice Of Life

Download

Download
onasunday-1.1-pc.zip 342 MB
Download
onasunday-1.1-win.zip 332 MB
Download
onasunday-1.1-mac.zip 337 MB

Install instructions

I've uploaded the ZIP files for PC, Windows, and Mac. Extract the ZIP, find the .exe file and it should be ready to play.

For example, if you download the Windows version, extract the files and go to the onasunday-1.0-pc folder. You'll find the application labeled "onasunday." Click on it to launch the game.

Development log

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