Venture deep into the Cavern of Longing with your trusty yet unwieldy sword. Will your sword be long enough to pierce the dragon's heart? Or will your puny sword be nothing but a laughable object of ridicule in the dragon's eyes?
- Achievement System: The Steam version adds achievements for clearing each stage of the game, as well as for beating the whole game in under a strict time frame, and a few secret achievements.
- BFS: Your starting sword is half the size of (but just as wide as) the protagonist, and it's eventually reforged into the titular "Deepest Sword", which is roughly three times the size of the protagonist.
- Damsel in Distress: Your motivation for defeating the dragon is rescuing your imprisoned...cat.
- Death Is a Slap on the Wrist: Every time you reach the dragon with an inadequate sword, you're roasted by its fire breath, and are warped back to start with a larger blade.
- Double Entendre: The dragon's derogatory comments on your sword's size, as well as her reaction when it's finally long enough to pierce her heart, is clearly referencing Bigger Is Better in Bed.
- Likewise, upon being rescued, your cat will exclaim "You came for me!"
- Double Meaning: The "Cavern of Longing", as your sword gets longer in order to navigate an increasingly longer path to reach a dragon longing for a decent opponent.
- Gold-Colored Superiority: When your sword becomes the "Deepest Sword", it transforms from iron to gold.
- Remixed Level: Every time your sword is reforged to be larger, a new platforming section is added between you and the dragon. And because of your sword's new size, you might need to take a different path to get through the earlier sections.
- Shout-Out: One of the secret achievements is labeled "Getting... Over It".
- Some Dexterity Required: You're unable to jump, so similarly to the hammer in Getting Over It with Bennett Foddy, you have to swing your sword around to reach platforms. It quickly becomes so large that it's impossible to simply drag it behind you, and you have to constantly pivot it around.
- Title Drop: The "Deepest Sword" is what your sword becomes when it reaches its maximum length.