Daily Challenge uses a shared seed and mutators; challenge codes are the published way to share an exact run configuration.

Deckalypse's published Daily Challenge is meant to give players the same run conditions. The official press kit describes one UTC-seeded run per day with rotating mutators, retries, and Steam leaderboard ranking by date and region. Use the displayed date and seed information before comparing a score with another player.
How to record a comparable run
Write down the UTC date, visible mutators, selected region, party state, and final result. If one player reports a very different encounter, first check whether the date, region, or mutator set is different. The developer's description is enough to establish a shared challenge structure; it does not publish scoring formulas, exact rewards, or a release-proof leaderboard cutoff.
Challenge codes are a separate published feature. A DKLP code packages a seed, region, and mutators so another player can attempt the same configuration. When sharing one, include the game build and the code exactly as shown. Do not call a code “solved” unless the recipient can reproduce the result in the same build.
The official materials also mention leaderboards, daily crates, and a skill minigame, but their live availability and reward tuning must be checked after launch. This page intentionally avoids inventing a daily reset time beyond the developer's UTC description.
Keep a screenshot of the starting screen with any shared result. A code can reproduce conditions, but it cannot prove that two players used the same build, optional settings, or update version.
For normal turn planning, read the Deckalypse shared energy guide. For the wider system map, return to the Deckalypse guide.
Sources
QUICK ANSWERS
Questions players ask next
What is the Deckalypse Daily Challenge?
The official press kit describes a UTC-seeded run with rotating mutators and Steam leaderboard rankings by date and region.
What does a Deckalypse challenge code share?
The developer says a DKLP code packages a run's seed, region, and mutators so another player can attempt that exact setup.