The DPL was created for the pure enjoyment of the DPChallenge community and thus rules exist to keep things lighthearted and fun. These rules may be amended at any time, though if an larger update occurs, it will generally be followed by an announcement.

NOTE: These rules are in addition to the normal challenge rules, including those for voting. The rules were last updated on May 6th, 2007.

• substitute only one team member in a given season for another user.
• add new users to your team at any time during the season, if your team began the season with less than the maximum number of players allowed.
• discuss challenge entries with team members, via email, PM, or in your team's forum thread, as long as all post-processing is done by yourself.

• participate on more than 1 team in a given season.
• vote on your team members' entries while a DPL season is in progress.