All content on CodinGame is published under the following license: License CC BY-SA 2.0

Contribution Process

A contribution has 3 different states:

• Private: a draft that can be shared with friends with the link.
• WIP: as Work In Progress. Visible by everyone for feedback and suggestions but not yet ready to be approved and published. WIP contributions cannot be approved. Unless the author changes its state, a WIP contribution goes back to a private state after 30 days.
• Ready: visible by everyone and ready for approval. If a ready contribution is not approved/rejected after 30 days, it goes back to a private state. A contribution cannot be published before 7 days even if it has been approved 3 times, to let time for other moderators to review it. If during this period it is rejected 3 times, it will go back to a private state, even if 3 moderators approved it.

To submit a classic puzzle or CoC puzzle as WIP or Ready, the author must provide a solution to the puzzle, in any language.

It's highly recommended:

• to solve enough puzzles before trying to create your own
• to publish a contribution as "WIP" first to get feedback from the community.

=> More details about the approval process

XP Rewards

Contributing to CodinGame rewards with XP.

• Every time one of your contribution us upvoted, you'll get 10 XP.
• Every time one of your contributions is (definitely) approved, you'll get 250 XP.
• Every time one of your comments is upvoted, you'll get 1 XP.

Types of contributions

Here is what you can create on CodinGame:

1. In/Out Puzzles (created via a form on CodinGame)
   • Classic Puzzle
   • Clash of Code puzzle
2. Coding Games (created with the CodinGame Game Engine, also known as the sdk)
   • Solo Game
   • Multiplayer Game (Bot Programming)
   • Optimization Game

Other types of contributions

Contributing to CodinGame isn't only about creating new puzzles/games. It's also about:

• helping others in the community spaces
• sharing your knowledge
• reviewing other's contributions and commenting
• writing articles/playgrounds

You can find here, a list of useful tools created by community members.

Some community members also participated in the creation of community challenges from 2017 to 2020. Find the complete list of challenges here. At that time, you could also enjoy joining a CodingHub

Best Practices

Coding Games

When creating a coding game, we suggest you follow these best practices in order to improve both its performance and the players' experience.

• Protocol/Stub
  • If options for a player are limited, they should be sent in input (ex: Wondev Woman)
  • The player's id should be 0.
  • The player's input should be sent first in loops.
  • Any non-explicit variable should be explained with a comment.
  • The stub should not change between leagues.
  • The generated stub should not contain more than 45 lines in Java.
  • The number of variables per loop should not exceed 10.
  • There should be a maximum of 2 loops.
• Gameplay
  • The game should be turn-based. Only perform checks (collision, presence, etc.) at the end of a turn.
  • The total entities should not exceed 200.
  • The maximum number of rounds should not exceed 250.
  • The maximum alloted time per player should not exceed 25 seconds.
  • It's possible to write a working AI in a few minutes.
  • If several leagues exist: boss difficulty is low but requires knowledge of each new set of rules per league.
• Graphics
  • Privilege the use of Sprites over Shapes (Rectangle, Circle, etc.)
  • Less than 2Mb in total should be used.
  • The minimum font size should be 36px.
  • The choice of colors should take into account color-blind people as much as possible.
  • .png and .jpg assets should be minified.