Daily Challenge is a new game mode that allows players to compete in different Challenges everyday. The final score of the run is submitted to the daily leaderboards. The leaderboard for the current day can be viewed in-game, or on the Daily Spire website which also provides historical leaderboards for all previous days.
Upon completing a Daily Challenge for the first time, the player is awarded the "My Lucky Day" Achievement.
Modifiers are Daily Challenge unique changes to the game that can be either positive or negative. They are colour coded in game, green for positive and red for negative. A list of the daily modifiers can be found on the Custom Mode page.