This is a short collaborative event project wherein we create Ghost House levels in SMBX. I will then judge and critique the levels, and after a period in which we all work together refining the levels, I will compile the best levels into a game called Mario's Mansion.

Timelines
Initial Level Submission Period: October 4th - October 18th
People are free to sign-up and submit new levels for a 2 week period.

Level Refinement and Rejection Period: October 19th - October 26th
I (and any other volunteers) will play the submitted levels and make judgments and refinement suggestions (and rejections) over a 1 week period. We will collaborate together to make some decent levels! No new level submissions allowed during this time.

Compilation Period: October 27th - October 30th
I will take the final version of the levels and compile them into a single game.

Release Date: October 31st
Obviously.

Submission Rules

• You must use SMBX v1.3 (the download link is in the Engines page if you don't have it already)
  
• There is no limit to the number of levels you can submit. (But only the best levels will make it to the final game)
  
• Rate the difficulty of the level on a scale of 1 to 5, with 1 being easy and 5 being hard.
  
• If your level has a boss, let me know.
  
• Most important rule: Have fun!
  

Level Rules

• We can't all use the Ghost House music for our levels. Please, try using a different music track. (You can include MP3s with your submission)
  
• The theme is Ghost House levels (if you don't know what that means, then play some Super Mario World and then come back). However, other spooky settings will be acceptable (assuming they meet the quality standards)
  
• Traditionally, the end of the level in a Ghost House is the SMW moving bar. But feel free to use different level endings if appropriate for your level.
  
• If you want to include secret exits, feel free! (But again let me know if you do this so that I can account for it when I compile the final game. Also, include a text file explaining how to get it)
  
• The player can't enter a no-win situation. At any point where the player is safe they must be able to complete the level.
  
• Multiple characters are allowed. (SMBX v1.3 allows the player to play as Mario, Luigi, Toad, Peach or Link.)
  

Refinement Period (Level Quality)

• Levels that don't meet a minimum level of quality will be rejected.
  
• Levels must be complete and level endings must be possible to acquire.
  
• If you are creating an autoscrolling level please check the Autoscrolling Tutorial for a guide of how to do it. Using scrolling layers leads to physics and collision issues and levels with these issues will be rejected.
  
• If a level plays like something you'd expect from a Kaizo-style romhack it will be rejected. Go start your own project if you want yet another impossible Mario game. We're shooting for fun platforming action Mario style that doesn't require precognition, time manipulation, or godlike reaction to beat.
  
• Levels can't cause SMBX to reach a volatile or glitchy state nor can they cause level/section wide slowdown in SMBX.
  
• Participants who submitted rejected levels will be notified of such, the cause of rejection, and a period to correct issues.