How did you do the different games styles. Also, where do you announce the updates.
Viewing post in Super Mario Bros. S - The New Desert Update comments
To make the different gamestyles I made a script that checks what the current gamestyle is and replaces the sprites of each level object based on a preset list. Updates for the game are announced on my YouTube channel (https://www.youtube.com/channel/UCqJD-1hFAnfdrlqzr9izD5A) and the SMBS Discord server.