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Steam

EVEN OR ODD 1

"Even? Odd? Forget the math!" Enter the Collatz Conjecture—mathematics' greatest unsolved mystery—reimagined as a high-speed roguelike action game. Play as "Ichi," the muscle-brained magical girl, teleporting between lanes to smash back incoming numbers with charge shots!

Released · 2026-06-28

At a glance

About this game

Core game information and the store records it came from.

Title: EVEN OR ODD 1
Content: Game
Release date: 2026-06-28
Developer: Fermat Freaks co., Ltd
Publisher: Fermat Freaks co., Ltd
Platforms: Windows
Connected stores: 1

Steam Steam source details

Store title: EVEN OR ODD 1
Product ID: 4495530
Developer: Fermat Freaks co., Ltd
Publisher: Fermat Freaks co., Ltd
Store platforms: Windows
Source checked: 2026-10-13 10:20 UTC

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How you can play

Features and tags

Select a feature to find other games that have it.

Ways to play

Single-player

Store features

Genres

Action
Casual
Indie
RPG
Strategy
Free To Play

Categories and genres from the Steam store, observed 2026-10-13. Store tags from Steam, as players and the store apply them.

Compare & explore

One game, connected stores

Each store keeps its own prices and observations. We prefer the latest recorded EUR price for Europa. When the displayed currency differs from the store amount, a separate approximate value may use the latest available ECB reference rate.

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Lumiri price context

Recorded price comparison

Matching store titles. One currency. One market.

EUR SE

Lowest recorded amount

Free

Steam

Recorded 1 day ago

Difference between stores

—

One comparable store. A difference needs another matching store price.

Distance from observed low

At observed low

Steam listing only. Low: Free.

Last seen 2026-10-13

Newest included record2026-10-13 10:20 UTC

1 included price record from 1 store · 1 linked listing

See the 1 included observation

Steam history →EVEN OR ODD 1
Free
2026-10-13 10:20 UTC1 day ago

How this comparison works

Only original EUR amounts recorded for SE and matching titles linked to this game are compared. Edition words and numbers must match. Other editions, source-market fallbacks and currency estimates are excluded.

These are recorded observations. Check the store for the current price, availability and included content. Historical lows belong to the named listing in this market and reflect the history Lumiri GameDB has collected.

Steam

EVEN OR ODD 1

Free

Price recorded 2026-10-13 10:20 UTC

Player activity

Observed Steam player history

Latest 1,000 points at most. Individual observations.

Last observed Steam players: 0
Observed peak · 24h: —
All-time observed peak: 0
Average players · 24h: —

Player history is taking shape

No local player observations yet. Collected samples will appear here over time.

Recorded prices

Price history · Steam

EUR observations for market SE. History belongs to the selected store listing; regional prices and taxes may differ.

Historical low observed by Lumiri GameDB: Free, last seen 2026-10-13

First recorded price. More observations will build the price history.

View 1 recorded prices

2026-10-13 10:20: Free

Prices observed by Lumiri GameDB in EUR.

Catalogue activity

Recent changes

Prices, release dates and store listing updates we detected. Repeated store refreshes are grouped.

No changes detected yet. Price and release updates will appear here.