Consumables
Consumables are one-shot purchases from the in-run shop, paid for with coins (the in-run currency you earn per kill and from skipping prep). Buying a consumable triggers its effect immediately — there's no inventory step. Each item has its own per-id cooldown so you can't spam the same buff back-to-back; the cooldown also enforces "no stacking" since the buff is still active during the cooldown window.
In multiplayer, any party member can buy with the shared coin pool, and the effect applies to the whole party (the server is authoritative).
One per run
Heart is the only consumable with a hard cap — you can buy it exactly once per run, regardless of cooldown. Save it for a clutch wave.
Defense & recovery
| Consumable | Cost | Cooldown | Effect | |
|---|---|---|---|---|
 | Frostbite Bomb Stuns every enemy on the field for 3 seconds. | 40 coins | 30s | Stuns every enemy on the field for 3s. |
 | Heart Restores 1 life. Limited to 1 purchase per run. | 100 coins | — (once per run) | Restores 1 life. Hard-capped to one purchase per run. |
 | Resistance Potion Grants immunity from tower-disable (nullifier) for 5 seconds. | 35 coins | 10s | Grants party-wide immunity to tower-disable (nullifier) for 5s. |
Offense
| Consumable | Cost | Cooldown | Effect | |
|---|---|---|---|---|
 | Overcharge The next 5 tower shots deal double damage. | 55 coins | 25s | Next 5 tower shots deal 2× damage. Charge-based — doesn't expire on a timer. |
 | Rapid Fire Potion All towers fire 50% faster for 15 seconds. | 50 coins | 20s | All towers fire 1.5× faster for 15s. |
 | Armor Penetration Potion All tower fire ignores 10% of every enemy's armor for 15 seconds. | 50 coins | 20s | All tower fire ignores 10% of every enemy's armor for 15s. |
 | Chain Catalyst Every chain tower gains +2 chain targets for 20 seconds. | 55 coins | 25s | Every chain tower gains +2 chain targets for 20s. |
Utility & economy
| Consumable | Cost | Cooldown | Effect | |
|---|---|---|---|---|
 | Productivity Potion Doubles your resource gather rate for 20 seconds. | 25 coins | 25s | Multiplies resource gather rate by 2× for 20s. |
 | Speed Potion Doubles your movement speed for 30 seconds. | 20 coins | 35s | Multiplies player movement speed by 2× for 30s. |
 | Adrenaline Pauses the prep timer for 5 seconds so you can plan. | 15 coins | 15s | Pauses the prep timer for 5s. |