Rare Drop Rates — Archipelago

Archipelago › Rare Drop Rates

Affinity Upgrades — drop-rate explorer

Drag the sliders to see how affinity investment shapes the final drop distribution per individual fruit (per-drop rolls — multi-drop crops mix rarities). Math uses the cascade roll model: highest tier rolls first, if it fails fall to next, else Common. Each tier's P(tier) = base + Master Farmer floor + affinity bonus. Uncommon and Rare base values shown here are the post-ramp ceiling — the rate once a crop reaches mastery L100 / L150. Early in a crop's mastery (L25–L100 for Uncommon, L75–L150 for Rare) the base climbs from 1/10 the ceiling.

Placed Cherryblossoms stack on top of this — each one reaching a crop adds an affinity-equivalent contribution of +5.0 levels (scaled by its Lucky Aura) to that crop's cascade. Useful late-game when shop affinity hits its ceiling.

Investment level

Master Farmer +0%

Each crop adds a rare-drop floor from its highest mastery tier (L100 +1% · L250 +4% · L500 +9% · L750 +17% · L1000 +29%), summed across all 8 crops.

Uncommon Aff. L0 0✦

Rare Aff. L0 0✦

Mythic Aff. L0 0✦

Dreamlike Aff. L0 0✦

Total affinity spend: 0✦

Final drop distribution

Probability of each tier per harvested tile, after cascade resolution.

P(tier) vs affinity level — single-tier view

Each line shows the raw P(tier) (independent of cascade priority) as that tier's affinity is leveled up. Base + Master Farmer floor (from your current crop tiers) is included so the lines shift when you change the MF sliders.

Uncommon (max L100, +0.1%/lvl) Rare (max L50, +0.02%/lvl) Mythic (max L30, +0.02%/lvl) Dreamlike (max L20, +0.005%/lvl)

Cumulative Sigil cost vs affinity level

Log scale on Y. Geometric ramps (×1.10–1.20) mean late levels are dramatically more expensive — endgame grind.

cost(level N) = baseCost × multiplier^(N−1) · Cumulative = baseCost × (multiplier^L − 1) / (multiplier − 1)