I don’t think the browser build and Windows build are any different? The Windows build has a fullscreen and a quit button, but that’s about it. In both builds, you need any 1 block to get the block ability, but that’s it. And even that’s mostly because if you could skip the first block, it’d be possible to softlock yourself by having nowhere to warp to, haha.
For what it’s worth, I did add some redundant button mappings to up and down, A and B buttons should work for those without any rebinding required. Good shout on the deadzone though, I’ll be sure to adjust it a bit since the movement is at fixed speed anyway so there’s no need for it to be low.
Thanks for the detailed write-up, glad you enjoyed it!