Classcraft is a popular gamified classroom management website that is primarily used in elementary classes. It does have a curriculum add on.
I haven’t used the core part of the website–the classroom management piece. Some teachers really seem to love it. I’m personally weary of generic gamification systems. They can limit the choices and autonomy that gameful education and UDL seek to create.
I considered Classcraft for my curriculum when I was looking at gamifying my curriculum. The curriculum works much like the system you have been using here, but it is more visually interesting. That is a great feature, but also my biggest issue with it. It was difficult to arrange a large curriculum on the map and became difficult to follow.
https://www.classcraft.com/teachers/quests/