Every game jam must have rules.

We've tried to keep the ambiguity as low as possible, but we understand and respect that differing interpretations can happen. Please know that we always keep the human in mind, and that our ultimate goal is a fun, learning experience for everyone. With that said, please also do your best to follow our rules, as they are there to help realize this goal.

Press the rules to expand for details

How closely your game follow the theme, and how you choose to perceive the theme, is entirely up to you.

When users rate your entry, they will judge it for how well they think it incorporates the theme, which is something to keep in mind as you develop your game.

We encourage participants to use any and all tools at their availability to extend the functionality and usability of GameMaker, as long as the game is compiled using legally licensed GameMaker.

Your game is only considered submitted once a playable version of it is present on the website via your entry.

You can only submit one copy of your game to the website. Duplicates will be removed.

If you are unable to submit your game to the website, e.g. due to technical difficulties, please ask for help with submission, and include the necessary files and information required for a standard submission.

The following is exempt from this rule if you have the legal right to use it:

  • Works of a derivative nature
  • Free, common-use scripts, e.g.
  • Any content used for the promotion of an entry, e.g. icon and banner
  • Generators, fonts, logos, brands, brushes, loops, drums and instrument samples
  • Photos and recordings (with a duration of no more than 10 seconds) taken or made by you
  • Engines, frameworks, templates, plugins, extensions and assets provided that they are available to everyone for free on GameMaker: Marketplace, and that they were not submitted to the marketplace specifically for the purpose of using them in the game jam.
  • Modelling software with built-in assets, e.g. AssetForge.

We encourage participants to credit the authors of any assets that they use to develop their games.

Artistic content includes, but is not limited to, sprites, backgrounds, images, photos, artwork, sounds, music and recordings.

You can port your entry to a new platform up to 24 hours after the deadline, provided that a) the content in your game remains the same, and that b) only issues and bugs relevant to the platform is fixed.

You can only port your game to each platform once. It is not possible to delete a port of your game.

Porting implies that, for example, if you've only submitted a Windows build, then you can export it to macOS and upload that build as well, for up to 24 hours after the deadline.

You can update your entry's title, summary, description, genre, engine, icon and banner as you see fit.

Artistic content includes, but is not limited to, sprites, backgrounds, images, photos, artwork, sounds, music and recordings.

Games must contain content that you have the legal right to use.

Blood, violence and gore is not prohibited. We encourage you to include a recommended age rating regardless of the maturity of your content.

The gm(48) welcomes participants of all ages, cultures and religions. Thank you for taking the extra effort in ensuring that our game jam stays open and friendly for everyone.

Hired work, e.g. individuals under contract, is prohibited if compensation is involved.

If you compete as a company, employees are exempt, but you must submit as a team, and this must be apparent of your team's biography.

It is only the owner of a team, that has to rate at least 10 entries, as the remaining members of a team is excluded from this rule.

Participants that do not meet this requirement will have their entries disqualified.