This is a very strong theme read. “Ten” is baked into the economy (trade 10 ore to level up), Level Up is the whole shop loop (pickaxe / lamp / rope), and the swamp celebration fantasy gives the dig a destination with “Find the Heart of the Swamp.” That packaging is clear on the page and clear in play.
Gameplay Experience is excellent for a jam mining game. Being bound by rope length, unable to dig while hanging, and forced to plan shafts makes every tunnel feel intentional. The upgrade curve also feels unusually well balanced for a short jam — mining power, light, and rope all stay relevant as layers get harder.
Visual Design and atmosphere are great too: swamp surface, darkness underground, lamp radius, and the froggy shopkeeper give the build a lot of personality. Keyboard-only controls are also a smart accessibility/controller-friendly choice.
Jam-side notes: the ending/heart discovery could be clearer (I reached deep content and signs/patterns without being fully sure I’d “finished”), and accidental Down taps can soft-trap ore behind you. Still, this is one of the most polished mining submissions I’ve played in the jam. Awesome work, Seb + Simon!