Check Linop's project for the rules to the challenge. Follow the instructions in the tutorial, or just skip and follow the questions. Check if you want, but I'm fairly sure I followed all of the rules and only used legal blocks. I'm not familiar with extensions, so I didn't include them, but I used my fair share of custom blocks. :) If there are any bugs, or I accidentally included something illegal, let me know in the comments. Example Platformer: End Goal - (150,120) # Platforms - 4 Platform #1 - (120,-150) Platform #2 - (-90,-90) Platform #3 - (-200,0) Platform #4 - (0,80) Start Position - (150,-75) Click [See inside] and use your mouse coordinates if you want an easy way to place platforms.