I'm gonna be honest, I didn't really understand the objective or how I was supposed to clear out the cube. Of course, there's a good chance that it's just my intelligence that's lacking here, but I still think if you were to add more to this in the future, the game would benefit with an animated example or a small comic that spells out what you have to do step by step, or even just an optional tutorial button that takes me to an infinite timer section before throwing me into a limited-time situation. If you could reply to this comment and tell me how I'm supposed to clear out the perimeter squares, I'll play this again with new knowledge because this genuinely looks like a fun and wellmade puzzle. :)
Anyways, the art and presentation is really great even if I wasn't able to comprehend the gameplay loop. And the name was eye-catching, which is why I'm here in the first place :P