Gem Sling

#Overview

Gem Sling has no timer. It fires whenever Tibo collects XP. Each XP gem he picks up flings a potato wedge in the direction he is facing. A run full of gems becomes a steady stream of wedges, and while no gems are being collected it does nothing.

At level 1 each gem flings two wedges: the weapon's amount of 1 plus Tibo's base +1 amount (see Stats). A wedge deals 8 damage, flies at 210 units/s for 1.125 s (0.9 s plus Tibo's base +25% duration, about 236 units) and has pierce 1, so it can hit two pests. Levelling raises damage to 18, speed to 240 and pierce to 3 (four pests per wedge). It is a base weapon offered on level-up. At max level, with Potato Magnet owned, a chest evolves it into Gem Catapult (see Evolutions).

#How it works

• One volley per gem. Only XP gem pickups count. Gold and other pickups do not.^[1]
• Queue. Collected gems join a queue that holds at most 40. The sling fires for up to 2 queued gems per tick (60 ticks per second), so a big pickup of gems is fired off quickly, but any gems above 40 in the queue are lost.^[2]
• Direction. Wedges go along Tibo's facing direction, not towards pests. Each wedge has a small random spread of up to ±0.05 rad (about 3°).
• Amount. Each gem fires one wedge per point of amount (two with no amount bonuses), fanned 0.16 rad (about 9°) apart and centred on Tibo's heading.

Measured in the headless sim (tools/play.mjs, build 41 main-B2gf34bA.js, Standard, Normal, god mode, seeds s1, s2 and s3; normal spawning; the seeded starting weapon removed, Starch Bolt given to level 8 to kill pests and Gem Sling given with give; Tibo walking in a slow circle for 40 s; level-up cards answered with the first offer that is not an amount bonus): Tibo collected 14–26 XP gems per run and the sling fired exactly 2 wedges per gem at level 1 and at level 8, each spawned with a 1.125 s lifetime; pierce was 1 at level 1 and 3 at level 8.

#Tips

• Gem Sling's damage depends on how many gems you collect. Potato Magnet and other pickup-range bonuses pull in more gems per second, so the catalyst helps the sling before the evolution too.
• Since wedges fly where Tibo faces, walking towards a crowd while collecting gems aims the sling at it.

#Stats

Values are the raw numbers from the game's definitions, before Tibo's global stat multipliers, difficulty and time scaling. In play, Tibo's base stats add +1 amount to every weapon except aura, cone, nuke and ring weapons, and make every duration ×1.25 (see Stats). Field names in code are the game's internal names. Attack descriptions such as “Melee slash” are this wiki's summary of the internal attack kind.

#Level progression

Each level-up adds the listed change to the weapon's raw values. Totals are cumulative.

#Base values

#Behaviour parameters

Raw parameters of the attack (behavior), copied from the game definition. What they do in play is explained under How it works above.

#Obtaining

• Offered as a card on level-up (offer weight 75).

#Evolution

Result	Requires	Type
Gem Catapult	Gem Sling (max level) + Potato Magnet	Evolution

#Names in other languages

Verified: the name the game shows when another language is selected in Settings, from its translation files.^[3] See Languages.

#Data

{
  "id": "gem-sling",
  "tier": "base",
  "base": {
    "damage": 8,
    "cooldown": 0,
    "amount": 1,
    "area": 1,
    "speed": 210,
    "duration": 0.9,
    "pierce": 1,
    "knockback": 0.6,
    "interval": 0.1
  },
  "levels": [
    {
      "damage": 2
    },
    {
      "pierce": 1
    },
    {
      "damage": 2
    },
    {
      "speed": 30
    },
    {
      "damage": 3
    },
    {
      "pierce": 1
    },
    {
      "damage": 3
    }
  ],
  "weight": 75,
  "behavior": {
    "kind": "bigUpdate",
    "variant": {
      "kind": "sling",
      "fan": 0.16,
      "spread": 0.05,
      "size": 4,
      "perTick": 2,
      "maxQueue": 40
    }
  }
}