The thing that makes Circuit Breaker special is a detail that really isn't rooted in one aspect of the game, but rather the game as a whole: Its tone and pacing. The game is presented as a 2D puzzle-platformer that meets the requirement of the theme "Loop" by sticking you in one roundabout level. This can be daunting for the player, as the thought of spending an hour (that's how long it took me to beat the game) on the same level can overwhelm them pretty quickly. However the game fixes this by presenting the player with certain "motivations". Clues that work not based on vaguely worded messages but images of the level the player has gotten to know so well, straightforward hints towards new controls that give the player better access to the level in some way, and backing the whole game with an ethereal soundtrack that allows the player to contemplate and think without getting stressed and rewards them upon finding a new area or control by altering the music to match the feeling. All these factors help shift the perspective of the player on the level, either literally or figuratively, reinforcing the player's conviction to complete the game if ever it gets low. It allows for the tone to be set as slow and contemplative while allowing the pace of the game to quicken the more you understand it.
Another interesting thing about the game is how well contained it is. It doesn't feel like the game needs to expand a whole bunch to be more fun or to complete an idea, its just fun as it is. For a game jam project in particular this is very impressive, as it is pretty easy to make a piece of something that you wanted to make but ended up not having enough time to see it through fully. It has just the right amount of depth to start and end satisfyingly. Truly amazing work!