The contest has concluded

For a write-up of the winners, and to play the winning games, please check the blog post here!

Everything below is simply archived content. Thanks for participating!

Have you ever wanted to make a game to horrify your friends? Or how about a wholesome game around collecting candy?

With five diverse categories and a $5000 prize pool, all creators are welcome!


Prize Categories

Twisted FairytalesHaunted AbodesSci-Fi HorrorSCP HomageHalloween Celebration
Additional Awards: Best Remix, Greatest Jumpscare

How to enter

Deadline: October 26, 5:00pm PDT

Publish a game in Core and fill out the form at the bottom of the page before 5:00pm PDT on October 26.

Winners will be revealed on October 29 and featured on the Core homepage through Halloween.

Submission details and official rules below

Get Started

What is lurking in the darkness?

The rattle of chains on hard stone walls, as icy fingers trail down your spine. The unholy moan of some ethereal spirit gasping in agony as your own screams echo in harmony. You stumble outside, fog clinging to your feet like fingers rising from the ground. You risk a final look backwards - and what you see tears through the final shreds of your sanity...

The pulse-pounding joy of fear can be wonderfully intoxicating - and we want to help you create and celebrate those moments! Horror (and wholesome Halloween joy) comes in many forms, so we're calling for game experiences in the following settings/sources of inspiration:

Twisted Fairytales Take a classic tale and give it your own unique macabre twist! From the works of The Brothers Grimm to Robin Hood and beyond, anything in the public domain (i.e. old tales, not specifics from modern adaptions) is fair game!Haunted Abodes These decrepit locations are home to horrors unknown. Haunted houses, cemeteries, mausoleums, and anything else you can imagine, are all perfect places for adventures.Sci-Fi Horror The future is home to any number of mysteries, but not all are benign. From abandoned spaceships to technology's dark side, the options are endless.SCP Homage SCP is a storehouse of subjects terrible, mysterious, and most of all [REDACTED]; use your favorite files from the SCP Foundation (excluding SCP173) to inspire a unique game. End of report.Halloween Celebration Whether you enjoy curling up with your loved ones to watch a horror movie, seeing the smile of children’s faces while trick or treating, enjoying pumpkin carving and spiced cider while leaves turn gold, or something else entirely - this is the category for all the sentimental and wholesome joy this holiday can bring!
We also have a few additional bonus awards to give out:

Best Remix Improve what already exists! Either from Manticore, the community, or one of your own games, the potential for changing the aesthetics, updating the gameplay, and adding surprise tricks and treats is one that can result in excellent games.Greatest Jumpscare Either a pre-scripted event or a multiplayer experience, whatever game creates the best moment will win this prize.
Entries in the contest will be judged on aesthetic appeal and interactivity. Entries must be games, not just scenes to explore.

Don't forget to scope down, and enjoy creating! We look forward to seeing what you dream up!

$5,000 in Prizing

Each Category Winner

  • $800 (each category)

  • Spooky Winner Profile Pic


  • $600

  • Spooky Winner Profile Pic

Jump Scare

  • $400

  • Spooky Winner Profile Pic

All Participants

  • Spooky Profile Pic

Environment Inspiration

All images on this page from Core games! Credit to Aggripina, Melamoryxq, WhiskeyWeasel, estlogic, ALTrKation, Eskil, Glichess, and TeamWerewolf

FAQ / Details

What is Core?

Core is a radically accessible game construction kit, community of creators, and game-playing platform, all in one. With Core, you can create multiplayer games, using the power of Unreal Engine, with no coding or art skills required. When you're ready to share your creations, publish them to the Core platform where they'll be instantly available to play.

Core is like having an entire game studio in your hands. It gives you the power of Unreal Engine; lets you access hundreds of free, high quality music, sound, and art assets; and enables you to bring immersive, multiplayer worlds to life.

Simply put, we want to help you create the game(s) of your dreams. To get started, download the client at

If I'm a newcomer to Core, where's the best place to start?

Check out our complete introduction to the Core editor to quickly get up to speed and begin creating. For a more structured set of tutorials, follow along with our free courses at Core Academy.

Does it have to be a playable game?

Yes, but we provide plenty of tools to make it easy! See our 'frameworks' (create --> new project) for full sets of game logic you can drag and drop into your map.

Can I make unique looking art in Core?

Yup! From high fantasy to dark wonderlands to modern military, we've got assets to match the mood - and thousands of primitives and materials to create your own from scratch as well! Our art director's blog post describes the ideology behind it all, for those who are curious.

Can I use community content?

As always, yes, it is encouraged! Please do give credit (in your game descriptions) to pay it forward.

Are there any submission specifications?

To enter, you must fill out the form below. Any entries modified after the submission due date are ineligible for prizes.

What is SCP?

SCP is a community-driven collection of horror stories in a common setting. If you're not already familiar with it, don't be too concerned; that category is just for those die hard fans!

How do awards differ from categories?

Selecting a category is mandatory, awards are a potential bonus for doing additional things on top of that.

Why a 'remixed' game award?

We encourage people to not 'reinvent the wheel' and to keep improving existing games - doing so helps you get up and running as fast as possible (important in a time-dependent jam), and also helps make a more fully-featured game you can really be proud of!

Can we use existing games?

As long as it fits the theme/category, yup! See the answer above for why.

How are entries judged?

We will take into account any adherence to the theme and category, then will judge based on the gameplay (30%), aesthetics (30%), and our overall impression (40%).

Can I submit multiple entries?

Sure, but they must be unique entries! You can not submit the same entry in multiple categories.

Can I update my entry after submitting?

Yes, but only until the deadline of 11:59 PDT Oct 26. Submitting early and updating is actually encouraged, to avoid any last-minute form submission errors! Just update the game on Core, no need to re-submit via the form. Note that once the contest ends you can not update until judging concludes, on Oct 29.

Can I work with a team?

Yes, and please do! For profile pics, please put all your collaborators' names (up to 5) and their credits in the game description for them to get this endowment too. Note that if your team wins, distribution of the prizing must be handled by yourselves (i.e. we'll give the prizing to the submitter, then they can allocate to team members).

Why do you want my email/sign up for a mailing list?

First off, we need to contact you if you win ;) Secondly, if you enjoy these contests and want to keep in touch with future ones, we want to give you the option to receive emails solely about contests (only ~2/month), to respect your inbox while keeping you up to date!

What if I'm under 18?

Ask your parent or guardian to submit your entry on your behalf.

How are winners paid?

We use Tipalti to pay winners in their local currency.

Do I need to credit sources of inspiration?

For SCP, yes! Note the author and the story in the game description please (and note that SCP173 is not allowed). See here for more details.

For fairytales you don't need to. Note that you can't use specific elements from modern readaptions (i.e. the exact Cheshire cat from Madness Returns), but the general stories are hundreds of years old and therefore in the public domain and free to borrow from.

Where can I see the official rules?

The Spooky Jam is subject to the Core Contests Official Rules.

What if I have more questions?

The best way to get help is through the dedicated Discord contest channels; alternately email us at and we'll do what we can for you.

Core May Art Contest
“Through the Looking Glass”

Core May Art Contest
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Core May Art Contest
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Core May Art Contest
“Through the Looking Glass”


The Spooky Jam is subject to the Core Contests Official Rules.

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