☆ Sonic AU Central ☆

Home of all things Sonic AU related Make sure to read the pinned post!

[sonic-au-august]

☆ Welcome to Sonic AU August! ☆

AU August (or AUgust) is a month-long prompt challenge designed to encourage Sonic fans to share their AUs. It will run annually every August, where a list of 31 unique prompts will be available on this blog, for participants to create for and share their AUs.

This is the official blog, where all matters concerning the event will be posted, including announcements, the prompt list, and reblogs of all the participating posts!

☆ Rules & Guidelines ☆

This blog is Safe for Work only!! NO NSFW content will be allowed. This means NO sexually explicit work and NO heavy gore (detailed drawings/descriptions of blood, guts, major wounds, etc.) [If your blog or AU has NSFW and/or suggestive content outside of what you create for the event, Mod will not be policing it. However, in good taste, please make sure it is tagged properly!]

No bigotry nor discourse. Please do not harass or send hate to the creators participating in this event for any reason.

NO AI is allowed, all work must be your original work. All kinds of media are welcome and encouraged!

Please tag content warnings for potentially harmful material in your work. [This may include eyestrain, flashing, blood/injury, death, suicide (including attempts, thoughts, and/or ideation), etc.]

Contact Mod directly if you have concerns that a rule is being broken by someone else, or any uncertainties about the rules yourself.

All work created for the event should be of an AU. Any participating AUs must be related to the Sonic the Hedgehog franchise

Have fun!! Mod has created this event to make it as fun and easy as possible to develop and share your AUs. Please don’t feel pressured to complete the whole prompt list within the month

The askbox is open for any questions you may have regarding AUgust! However, please read the [FAQ] before sending an ask to see if your question has already been answered!

[Link to AUgust 2025 Tag (#sonic au august 2025)] [Link to the 2025 Prompt List!]

AUgust 2026 is in the works! Hope to see you there ;)

[sonic-au-collision-zone]

SIGN-UPS CLOSED

Thank you everybody for your support, I’m happy to say that all slots were filled in time! The bracket will be revealed on June 14th so stay tuned. Please keep in mind that all match-ups will be randomized.

All accepted AUs are viewable in the public roster linked below. If you are the creator of one these AUs and would like to update your submission, please DM me by June 18, 8pm PST, with your changes. After the deadline you will not be able to make any edits until the end of Round 1. (CWs are exempt and can be changed at any time).

["Woah, so many worlds...this trip is gonna take a while to plan. Also, I might have gotten a papercut." -Android]

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

1 DAY LEFT

Sign-Ups are closing tomorrow at 3pm PST! There are less than 5 slots left so sign up now before they're gone!

Remember, sign-ups are first-come, first-served* so the sooner you sign up the better!

*Due to special circumstances, those who signed up for Mini Collision last year before it was cancelled will have first priority.

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

16 SLOTS LEFT

AUs are now coming in fast and sign-ups are closing tomorrow. Sign up while you still can!

SIGN-UPS

PUBLIC ROSTER

⭐️ Art by @solar-systemm

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

WHAT QUALIFIES AS AN AU?

So many times, I’ve seen people look at AU Collision and go “oh, I don’t really have an AU I can use, I just have something that is an expansion of canon media/too new and underdeveloped/very old and hasn’t been updated in a while/only characters from different official medias interacting with each other/only written and not drawn/too Sonic-OC centric/etc. so I guess I can’t join.” Well, guess what? You CAN join.

As stated on our Carrd’s FAQ, “The term AU, or Alternate Universe, is used loosely within Sonic AU Collision. This means that anything with a distinct difference or variation from canon, will be considered as an AU and may be entered into the Collision. This includes canon-divergence, crossover fusions (I.e. A retelling of Percy Jackson but with Sonic characters), Sonic OC-centric stories, etc.”

The heart of Sonic AU Collision is to bond over the source material (Sonic) and the fandom’s creative spins. Got a story that serves as a character study of Amy? We’d love to see your interpretation of her! Got an AU you made five minutes ago? Sign it up! We’d love to see your AU grow in real time! To us, it’s all AUs. Always has been.

TLDR; any story you made for the STH franchise that isn’t canon (+ doesn’t contain mature or problematic topics) qualifies as an AU and is more than welcome to join the Collision!

So what are you waiting for? Sign-up today!

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic edited by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

2 DAYS LEFT

Time’s running out! There’s only 2 days left until the new deadline, which will not be extended again. However, WE STILL NEED 20 MORE ENTRIES!! Spread the word!

Remember, sign-ups are first-come, first-served* so the sooner you sign up the better!

*Due to special circumstances, those who signed up for Mini Collision last year before it was cancelled will have first priority.

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

3 DAYS LEFT

Time’s running out! There’s only 3 days left until the new deadline, which will not be extended again.

Remember, sign-ups are first-come, first-served* so the sooner you sign up the better!

*Due to special circumstances, those who signed up for Mini Collision last year before it was cancelled will have first priority.

SIGN-UPS

PUBLIC ROSTER

⭐️ Sketch by @solar-systemm, lines & color by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

INTRODUCING ANDROID!

Android (they/them) is the mod’s ambiguously Metal and/or Sonic sona who, in-universe, runs AU Collision! You may see them running around a bit during the event :D

(that’s right, AU Collision has lore now)

It would make Android so so happy if you signed up so they could have multi-versal friends to play with! Just look at those eyes!

There’s only 25 slots left! Sign-up today!

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

1 WEEK EXTENSION

We’re still short by 27 entries so the deadline has been extended to June 7! Remember, sign-ups are first-come, first-served* so the sooner you sign up the better!

*Due to special circumstances, those who signed up for Mini Collision last year before it was cancelled will have first priority.

Please help get things rolling by reblogging this post and sharing sign-ups with anyone you know. Thank you!

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @solar-systemm

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-august]

An extended chance!!

[sonic-au-collision-zone]

32 SLOTS LEFT

That's right, half of the slots are now filled and time is running out. Submissions are accepted on a first-come, first-served basis. Sign up while you still can!

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

SIGN-UPS OPEN

Submissions are accepted on a first-come, first-served basis.* Sign-ups will close on May 31st or sooner if all 64 slots are filled earlier.

A public roster is also linked below and will be updated automatically as the mod accepts AUs. You can use this to view the total amount of submissions, submissions yet to be reviewed, and the amount of slots remaining.

*Due to special circumstances, those who signed up for Mini Collision last year before it was cancelled will have first priority.

SIGN-UPS

PUBLIC ROSTER

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-august]

NOW!!

If you like competitions, AUs, and interacting with the fandom, this may interest you!

[acposter16]

Sonic AU August 2025 Prompt 31: "Ever After"

https://archiveofourown.org/works/69759726/chapters/214315556

Where did everyone end up?

Thanks @sonic-au-august for putting this together. Sorry it took so long to finish it! :D

[sonic-au-collision-zone]

SIGN-UPS OPEN TOMORROW

Sonic AU Collision sign-ups open TOMORROW at 3pm PST! Make sure you're prepared, here's what's expected upon signing up:

- Your Name or Alias - A LINK to your Tumblr - A LINK to any Co-Creator's Tumblr (if applicable) - AU Name - Content Warnings (if applicable) - Description of the AU - Image or Logo of the AU - Credits (if applicable) - A Link to any additional content of the AU - e.g. a Masterpost, Comic, Tag, Dedicated Blog, etc. (optional) - Questions, Comments, or Concerns (optional)

ATTENTION: If you signed up for Mini Collision last year before it was cancelled, you should have received a message from @starzdeath regarding early sign-up access. You would have received this message either through Tumblr, Email, or Discord so be sure to check all three just in case. If you believe to be one of these people and have not received a message, please don't hesitate to reach out so we can get things sorted! Regardless, you will receive top priority whether or not you signed up early.

⭐️ Graphic & Blueberry AU by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-august]

Today!!

[sonic-au-collision-zone]

BE PREPARED!!!

Sign-Ups open in 2 weeks! While you wait, now is the perfect time to prepare your materials! Here's what's expected upon signing up:

- Your Name or Alias - A LINK to your Tumblr - A LINK to any Co-Creator's Tumblr (if applicable) - AU Name - Content Warnings (if applicable) - Description of the AU - Image or Logo of the AU - Credits (if applicable) - A Link to any additional content of the AU - e.g. a Masterpost, Comic, Tag, Dedicated Blog, etc. (optional) - Questions, Comments, or Concerns (optional)

⭐️ Graphic & Blueberry AU by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

Join the Discord Server!

[sonic-au-collision-zone]

GET READY!!

Sign-Ups open in 3 weeks! While you wait, now is the perfect time to prepare your materials! Here's what's expected upon signing up:

- Your Name or Alias - A LINK to your Tumblr - A LINK to any Co-Creator's Tumblr (if applicable) - AU Name - Content Warnings (if applicable) - Description of the AU - Image or Logo of the AU - Credits (if applicable) - A Link to any additional content of the AU - e.g. a Masterpost, Comic, Tag, Dedicated Blog, etc. (optional) - Questions, Comments, or Concerns (optional)

⭐️ Graphic & Lifeless Bonuses AU by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation @sonic-au-august

More information can be found on our Carrd.

[sonic-au-collision-zone]

MARK YOUR CALENDARS!!

That's right, folks! Sonic AU Collision is officially back and ready for action, so get ready because sign-ups open on May 17!

To all you newcomers, is a bracket tournament featuring 64 AUs that compete until only one is left standing and declared the winner. While this event may be competitive in its nature, the true goal at heart is to promote positive interactions within the community and create a place to share and discover AUs above all.

(If you signed up for Mini Collision last year, you should have already recieved a message regarding early access to sign-ups, due to the event needing to be canceled partway through. If you believe to be one of these people and have not recieved a message from @starzdeath either through Tumblr, Email, or Discord, please don't hesitate to reach out so we can get things sorted!)

⭐️ Graphic by @starzdeath

⭐️ Let’s explore together! @sonic-event-zone @faneventstation

More information can be found on our Carrd.

[sonic-au-august]

I, Mod, wasn't able to host an in-between AUgust event like I planned, due to being unprecedentedly busy. Perhaps next time...

But! Here is a fun AU-related event upcoming! Please check it out if you're interested in engaging more with the Sonic AU community <3

[sonic-au-august]

What if you guys some sort of "Into the SonicVerse" with all the AUs?

Oh? Sounds interesting!

However fun that would be, the AUs featured on this blog aren't mine and I am not sure how I would go about organizing an event for this (nor do I have the time to figure it out right now ^^). I encourage everyone to interact with other AUs, though!

Although, Anosoft, might you be interested in looking at the nine-tailed travel guide through the multiverse for Nine (from Sonic Prime) going through different Sonic AUs?