An upgrade order built on the real numbers: treehouse levels and HP, the turret upgrade cost formula, Antenna math, and when to upgrade instead of roll — checked 2026-11-08.
Upgrade in this order: keep your best placed turret's level climbing (each level is +10% damage for that turret), raise the treehouse when enemies start hitting it, buy Luck to about 150 effective and a third roll slot, then fund the next turret tier. Because the next upgrade level costs (turret price ÷ 2) × 1.10^(level − 1), maxing a turret costs roughly 125,000× its buy price — so early on, a stronger turret usually beats a maxed weak one.
Source: the community wiki's Damage and Mastery page, checked 2026-11-08.
per-shot damage = base × Mastery bonus (1 + (Mastery − 1) × 0.10) × turret upgrade bonus (1 + (Turret Level − 1) × 0.10) × Antenna buff (1.25 + (Antenna Level − 1) × 0.004) × Index damage bonus × world multiplier, divided evenly across barrels
+10% damage per Mastery level, max level 500 (×50.9); XP needed for the next level is current level × 10; Mastery is shared between a turret and its mutated versions and carries across worlds
the next turret upgrade level costs (turret price ÷ 2) × 1.10^(level − 1), capped at level 100
maxing a turret costs roughly 125,000× its buy price — the first levels are cheap and the last ten cost more than every earlier level combined
The treehouse is your life total and the gate to the world system — the Rich Man NPC arrives at level 4, and each world's level 9 unlocks the next world.
| Level | Treehouse HP | Cost to next level |
|---|---|---|
| 1 | 100 | $10K |
| 2 | 250 | $125K |
| 3 | 600 | $1.5M |
| 4 | 1,500 | $17.5M |
| 5 | 4,000 | $200M |
| 6 | 10,000 | $2B |
| 7 | 25,000 | $1Qa |
| 8 (Honey Tree) | 62,500 | $50Qa |
| 9 (Alien Treehouse, max) | 156,250 | — |
Source: the community wiki's Treehouse page, checked 2026-11-08.
Each placed turret can climb to level 100 at +10% damage per level, one level at a time or five at once. Levels are the only damage upgrade applied directly to a turret you already own, and the first levels cost half the turret's price — the cheapest damage in the game.
Level 1→2 costs (price ÷ 2); a Basic Turret's first level is $50.
The treehouse is your life total, from 100 HP at level 1 to 156,250 at level 9. Upgrade when enemies reach it on waves you should be clearing; otherwise bank the cash. Levels 4 and 9 also gate world travel — the Rich Man NPC appears at treehouse level 4, and level 9 unlocks the next world.
$10K → $125K → $1.5M → $17.5M for the first four upgrades.
Luck levels raise roll odds until every turret has 'switched on' around 150 effective luck; past that, extra Luck stops improving odds and roll slots or more rolls are the better spend. This makes mid-game Luck purchases efficient and late-game Luck purchases wasteful.
Levels 1–10 total about $2.2K; levels 51–75 run $4M to $460M.
Slot 2 costs $5K and slot 3 costs $25K. At three slots, Bonus Spins unlock — each slot has a 5% chance per roll to produce a free bonus prize, up to three per roll. Slots 4–6 cost $150K–$2.5M and are the main use of money once odds stop scaling with Luck.
$5K / $25K / $150K / $750K / $2.5M for slots 2–6.
The Epic Antenna boosts every turret within 23 studs: level 1: ×1.15 fire rate and ×1.25 damage for turrets within 23 studs, scaling to each buff gains +0.004 per level above 1 (level 100: ×1.546 fire rate, ×1.646 damage). Antenna buffs do not stack — only the strongest applies, and Antennas do not buff each other, so one Antenna per turret cluster is the efficient layout. Its upgrades were made to work in the V1.0.1 patch (September 17, 2026) — level it alongside your carry.
Antenna costs $400K from rolls (1/1.9K base odds).
The first level is cheap; the curve is not. Plan one maxed carry at a time.
| Turret | First level (1→2) | Total to level 100 |
|---|---|---|
| Basic Turret | $50 | ~$6.26M |
| Tesla | $22.5K | ~$2.82B |
| Quad Launcher | $2M | ~$250.5B |
| Raygun | $250M | ~$31.3T |
| Zero Point Turret | $2T | ~$250.5Qa |
Source: the community wiki's Damage and Mastery page, checked 2026-11-08.
Worlds are the game's rebirth system: each new world multiplies money, turret damage and luck, which re-prices every upgrade on this page.
| World | Money | Turret damage | Luck | Unlock |
|---|---|---|---|---|
| Normal World | ×1 | ×1 | ×1 | Default |
| Golden World | ×2 | ×2 | ×2 | Treehouse level 9 in the Normal World |
| Crimson World | ×4 | ×4 | ×4 | Treehouse level 9 in the Golden World |
Source: the community wiki's Worlds page, checked 2026-11-08. Each world is a separate save slot; Mastery and Index progress carry over.
If your treehouse is taking damage on waves you should clear, upgrade — turret levels or treehouse HP stabilize a run. If your defense is holding comfortably, roll: a better turret raises your ceiling, and Luck-scaled odds make rolls productive up to about 150 effective luck.
Eventually, on one turret — the cost formula (price ÷ 2) × 1.10^(level − 1) means the last ten levels cost more than everything before them, and a full max runs about 125,000× the buy price. Maxing a Basic Turret totals ~$6.26M while a Tesla at the same levels totals ~$2.82B; max cheap turrets early, expensive ones only in the late game or a higher world.
HP: 100 → 250 → 600 → 1,500 → 4,000 → 10,000 → 25,000 → 62,500 (Honey Tree) → 156,250 (Alien Treehouse). Levels 4 and 9 also unlock the world system: the Rich Man appears at level 4, and each world's treehouse level 9 unlocks the next world.
No — each world resets cash, treehouse level, turrets, swords, waves, roll slots and Luck. What carries over: Mastery levels, Index progress, meteorites, crates and tokens, plus dynamic turrets and the Telanthric Blade. This is why Mastery grinding in an early world is never wasted.
Golden World doubles and Crimson World quadruples money, turret damage and luck. The same $17.5M treehouse upgrade is effectively four times easier to fund in Crimson — big ticket upgrades are best bought in your highest unlocked world.
Your first hour and the early money sinks.
Where upgrade pressure comes from.
The luck formula and upgrade cost bands.
Roster prices that drive upgrade costs.
Score your exact state for an ordered plan.
Every system explained with tables.
