Mega Stack ‘O’ Jam

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This jam is now over. It ran from 2025-08-14 18:00:00 to 2025-08-22 03:59:00. View 77 entries

What is the Mega Stack 'O' Jam?

Work alone as an individual to make the most incredible project in Unreal Engine using the new and improved Stack-o-Bot Sample and submit it before the deadline!

Stack O Bot has been fully rebuilt from the ground up for Unreal Engine 5.6. Designed to be a great learning resource and a perfect starting point for new developers exploring modern game creation.

Built with flexibility in mind, Stack O Bot runs across a wide range of devices—from mobile phones to high-end PCs. It features input support for touchscreen, gamepad, and keyboard/mouse.

Official Rules

Arabic, Chinese, English, French, German, Japanese, Korean, Polish, Russian, Spanish, Spanish (Latin America), and Turkish.

Project Requirements

All submissions must utilize the Stack-o-Bot 2.0 Sample
The game must include custom gameplay that exceeds the gameplay found in Epic Games’ starter templates.
All art assets in the game must have a material other than "DefaultMaterial" applied to it.
Submissions must be packaged for Windows, MAC OS X, Android, or iOS (development build)—no full, unpackaged projects. VR and AR projects are accepted, though we will recommend that you build and package for the above as there are no VR / AR criteria. Android games can be distributed via the Play Store as well.

Additional Note: Entrants must be 18 years old to participate in the contest.

How to submit

We'll be kicking this one off during the livestream on both Twitch and YouTube on Thursday, August 14, at 2 PM ET. The Mega Stack 'O' Jam ends on Thursday, August 21, at 11:59 PM ET. You will need the following information at the time of submission:

Team name (while all submissions are individual only, we recommend creating a name for your solo studio during this event)
Your name and contact email address, as well as your Epic Games Account related email address if different from contact email
Game name
Naming

Make sure to format the name of your .zip file with your solo studio name attached as well as game name, ex. TeamName_GameName

List any content that was created before the jam that was included in the final submission
Submissions MUST include a link to gameplay footage (between 30-60seconds) demonstrating recorded gameplay

The footage will be included in our highlight reel during the Mega Stack 'O' Jam results livestream
Finalists may be asked to produce a cleaner version/trailer for the game for use in the finalist's sizzle reel

>> You need to upload your game to your Itch.io account page before you can submit it to the Mega Stack 'O' Jam page.<<

NOTE: In order to submit your game to Itch.io, your .zip file must be UNDER 1GB. This won't affect most projects, but please be mindful of the size of your game once compressed. If your file is more than 1GB, you may utilize the Butler tool to upload your files to Itch.io. More info on that is here. Also, check out Blendo Itch Uploader, a GUI for uploading projects to Itch.io.

GETTING STARTED

Here are some resources that will help you get prepared for the Mega Stack 'O' Jam!

The in-depth Stack-O-Bot Documentation is at your fingertips and covers:

StateTree for NPC Behavior
Modular Level Instances
PCG (Procedural Content Generation)
HLOD Generation
Physics-based Interactions
Dynamic Camera
Gameplay Interactions
and so much more!

The Epic Developer Community platform is a fantastic place, whether you’re just getting started or are experienced in development with Unreal Editor for Fortnite, Unreal Engine, or any other Epic Games tools and software. The EDC features hundreds of free tutorials on various topics, contributed by both Epic Games and the community. It is also the place for code snippets. If you have any questions or want to spin up conversations with fellow developers and creators, we have a bustling forum just for you!

If you're looking for Unreal Engine Documentation, you can find it here.

Don't forget to share your progress as well as a link to your entry on the forums for increased discoverability and recognition within the industry, and the chance to be showcased on the EDC!

Got questions that relate to the Mega Stack 'O' Jam? Reach out to us on the dedicated announcement forum thread.

Chat with other jammers and find further insights over at the Forum announcement thread, or head over to #challenges on Unreal Source, the community-run Discord for all things Unreal.

The Unreal Directive is dedicated to providing well-researched, easy-to-understand Unreal Engine resources that adhere to best development practices. Check out their resources here!

Judging

Qualified Submissions will be reviewed and scored (1-5 point scale) by a panel of qualified judges, according to the following criteria:

Level Design
- Up to 10 points, split between level/environment and creative/technical approaches to world creation
Fun Factor
Visuals
Audio
Gameplay

Award Categories and Prizes

The Mega Stack 'O' Jam will feature 1st, 2nd, and 3rd place Unreal Engine finalists, 1st, 2nd, and 3rd place student (UE) finalists. Submissions cannot win both the non-student finalist placements and student finalist placements.

itch.io

Mega Stack ‘O’ Jam

What is the Mega Stack 'O' Jam?

Stack O Bot has been fully rebuilt from the ground up for Unreal Engine 5.6. Designed to be a great learning resource and a perfect starting point for new developers exploring modern game creation.

Official Rules

Project Requirements

How to submit

>> You need to upload your game to your Itch.io account page before you can submit it to the Mega Stack 'O' Jam page.<<

GETTING STARTED

Judging

Award Categories and Prizes

1st Place Prizes

2nd Place Prizes

3rd Place Prizes

1st Place Prizes - Student

2nd Place Prizes - Student

3rd Place Prizes - Student

Don't forget to share your progress as well as a link to your entry on the forums for increased discoverability and recognition within the industry, and the chance to be showcased on the EDC!

Plan on streaming your development? Want to show off your WIP? Share your progress with us on socials, and use #UnrealJam.

Submissions(77)