Crystals
Collected while mining; sell them for cash.
Official game descriptionItems and rewards
A plain-language inventory of the resources and tools visible in the current game loop, with the evidence level stated beside each claim.
What matters first
Crystals become cash. Pickaxe, backpack, and warmth improve different constraints. Runes and radar form a separate boulder-search loop. Do not assume old prices, timers, or drop rates still apply.
Reference table
Item, purpose, and confidence
Cash
The spendable result of selling crystals; use it on the upgrade blocking your next run.
Official loop + practical inferencePickaxe
Mining upgrade. It is also used to break boulders in player-demonstrated rune runs.
Official + player footageBackpack
Carry-capacity upgrade; more room means fewer forced sell trips.
Official game descriptionWarmth
Supports climbing where the mountain gets cold, especially near the top.
Official game descriptionBombs
A mining utility shown in player gameplay. Treat cost and efficiency as version-dependent.
Player footageBoulders and runes
Mine boulders, collect the rune, then place it on your plot; footage shows timed output and preserved remaining time when picked up.
Player footageBoulder Radar
Highlights boulders and cuts search time during a rune-focused session.
Player footageDigging Luck
The game page advertises +1 after liking the game and joining the developer group.
Official game descriptionSpend rule
Upgrade the thing that ends the run
If mining feels slow, compare pickaxe value. If your bag fills while the route is still productive, choose backpack. If cold stops the climb before capacity does, choose warmth. Keep cash when the next purchase is unclear instead of spreading it across all three.