After much procrastination as well as real life keeping me busy, I've finally completed Battlesprawl's interior. Here are a couple pictures of it, though I've also made a few extra additions that you will not see until you get to play the level.
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The level employs Gravity Triggers to remove the need for Gravity Modifiers, allowing a seamless transition between the level's different sections when rolling on the purple ramps.
The level will be released soon, once I'm done adding all the gems, power-ups and triggers as well as running a private playtest of it. Also, I'm considering changing the level's name to something better than Battlesprawl, so whether you think the name should change or stay the same, feel free to post your opinion and name suggestions here.
Sprawling Cuboid is complete and has been uploaded to the website, this post and the original post will be updated with the download link once the level is approved.
Keep in mind that there is currently a bug with Gravity Triggers in multiplayer which is making them switch all players' gravities instead of only switching the gravity of the player that crosses them, so for now you'll probably only be able to properly play the level alone and will have to wait until the bug is fixed before you can properly play it with other people.