6 beats, 6 effects, 6 melodies, and 6 voices! and it's widescreen! how are you doing that?? I found that template like that buts its only in scratch
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Slight caveat with using Cocrea for widescreen, i think you need written permission from SFSG to post Incredibox content on that site.
Also, about the 6 in each category thing, the way I did it was taking a template with 5 bonuses and modding it from there, like you add 2 more to the "Repeat 9" part for 2 more on that row. You can also get rid of the fifth bonus unless you still want it.
I use Scratch for Incredibox modding because it's the easiest to work with and keep your projects up.
I actually just did it in like 10 minutes: https://scratch.mit.edu/projects/1230947065/