Production-grade odds engine

Blooket calculator

Space PackOdds Calculator

Exact drop rates, Legendary & Chroma probabilities, and duplicate refund math for the Space Pack — before you spend a single token.

⚡ Real-time exact odds
📊 Based on real drop rates
🎯 No signup required

Default pack

Space

Effective cost

7.825 tokens

Last updated

May 3, 2026

The Space Pack is a full-time 20-token market pack with seven rotating Colored Astronaut chromas, with only one active astronaut color available at a time.

Target Pack

Space

500 tokens

Deterministic odds on the main thread, Monte Carlo runs off it.

02.5k5k slider max

Dupe refund

Uses the precomputed effective cost of 7.825 tokens.

Epic+ probability

72.3%

72

At least one Epic, Legendary, or Chroma.

Legendary probability

10.7%

11

Exact chance of at least one Legendary.

Chroma probability

1.24%

1

Uses the current community-referenced pack Chroma rate.

Estimated opens

25

Cost model

20.000 / box

Data freshness

2026-05-03

Full simulation

Runs 5,000 iterations in a web worker and returns only aggregated results.

Based on 18,240 simulations run today

What is the Space Pack?

Understanding the Space Blooket box before you spend.

Space is one of the signature Blooket packs. It mixes four uncommons, two rares, one epic, one legendary, and seven rotating Colored Astronaut chromas. Only one Colored Astronaut is active on a given day, so pack-level chroma math is capped at the live 0.05% rotation rate.

Pack price

20 tokens

Avg sell-back

12.175 tokens

Epic+ per box

5.00%

Legendary floor

1 in 222

Currently available in the live discovery hub.
Duplicate sell-back average sits around 12.2 tokens.
15 blooks are indexed in this pack collection.
Earth · Uncommon · 18.8%
Meteor · Uncommon · 18.8%
Stars · Uncommon · 18.8%
Alien · Uncommon · 18.8%
Planet · Rare · 10.0%
UFO · Rare · 10.0%
Spaceship · Epic · 4.50%
Astronaut · Legendary · 0.45%
Pink Astronaut · Chroma · 0.05%
Yellow Astronaut · Chroma · 0.05%
Black Astronaut · Chroma · 0.05%
Orange Astronaut · Chroma · 0.05%
Red Astronaut · Chroma · 0.05%
Brown Astronaut · Chroma · 0.05%
Green Astronaut · Chroma · 0.05%

Drop rates table

Server-rendered odds for the Space Pack

These rates are rendered in HTML for crawlability and matched against the exact client calculator. Duplicate refund math uses the precomputed average sell-back value shown below.

RarityDrop rateApprox. oddsSell value
Uncommon75.0%1 in 15 tokens
Rare20.0%1 in 520 tokens
Epic4.50%1 in 2275 tokens
Legendary0.45%1 in 222200 tokens
Chroma0.05%1 in 2,000300 tokens
Avg duplicate sell-back100%Effective open cost: 7.82512.175 tokens
Source: iBlooket calculator + Blooket WikiUpdated: May 3, 2026Per 500 tokens at face price: 25 opens

FAQ

Common questions about Space odds

What are the odds of a Chroma in the Space Pack?

Using the current community-referenced Space Pack table, each box has a 0.05% Chroma rate. At 500 tokens with duplicate refunds off, the exact chance of at least one Chroma is 1.24%.

How does dupe refund work in this Space calculator?

The real-time calculator does not simulate endless duplicate loops. Instead, it uses a precomputed effective cost for the Space Pack. That effective cost is the pack price minus the exact average sell-back value from the current pack table, which keeps calculations instant while still reflecting duplicate refunds.

What are the odds of at least one Legendary from the Space Pack?

This calculator uses exact binomial math, not guesses. At 500 tokens with duplicate refunds off, the chance of at least one Legendary from the Space Pack is 10.7%.

Does this tool use simulation for the main odds?

No. The headline probabilities update with the exact formula P(at least 1 success) = 1 - (1 - p)^n. Full simulation only runs when you explicitly click the simulation button, and it runs off the main thread in a web worker.