KEFIR
KEFIR is a Cyprus-based mobile game studio developing free-to-play titles Last Day on Earth, Frostborn, and Sunday City for global app stores, monetizing through in-game virtual items and ads, with over 500 million players across its portfolio.
- Company typePrivate
- Founded2009
- HeadquartersAgía Paraskeví, Greece
- Headcount251–500
- GTM typeB2C
- OfferingSoftware
What KEFIR does
KEFIR (legal entity AP KEFIR LTD, registered in Cyprus, registration HE 427756) is a mobile game development studio founded in 2009 with its primary headquarters in Limassol, Cyprus and a secondary office in Dubai, UAE. The company develops and publishes free-to-play mobile games, with three core titles in its portfolio: Last Day on Earth (zombie apocalypse survival), Frostborn (Viking mythology multiplayer survival with PvP, raids, and seasonal content), and Sunday City (city-life social simulation). According to company materials, more than half a billion players have engaged with Kefir's projects across these titles. Technology is built on the Unity game engine with Wwise (Audiokinetic) audio middleware, supported by a virtual items / virtual currency system and a roll-back mechanism for app-state recovery during updates.
The company's commercial model is freemium: games are free to install with no subscription, and revenue is generated through (a) in-app purchases of non-refundable virtual currency and virtual items processed through Apple App Store, Google Play, and a broad set of alternative Android storefronts (Xiaomi GetApps, Huawei AppGallery, Samsung Galaxy Store, Catappult/Aptoide), and (b) advertising revenue via Google AdMob, AppLovin, and Unity Ads. Distribution is global through app stores plus a direct APK channel, with QR-code-based discovery supporting mobile installs. Kefir complements its consumer business with two ecosystem programs: a multi-tier Creator Program (Associate and Partner) for YouTube, Twitch, and TikTok content creators, run through a closed Discord community, and a Partnership Services offering that provides HR, project management, financing, publishing, and expertise support to external development teams. The Terms of Service are governed by the laws of the Republic of Cyprus.
KEFIR firmographics
Firmographics- Name
- KEFIR
- Legal name
- AP KEFIR LTD
- Website
- https://kefirgames.com
- Company type
- Private
- Founded year
- 2009
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- KEFIR is a Cyprus-based mobile game studio developing free-to-play titles Last Day on Earth, Frostborn, and Sunday City for global app stores, monetizing through in-game virtual items and ads, with over 500 million players across its portfolio.
- Ownership category
- akta.pro rank
KEFIR industry classification
Industry- Product category
- Mobile Gaming
- NAICS
- Software Publishers (5132), Other Specialized Design Services (541490)
- akta.pro primary industry
- Multi-Channel Networks (MCNs) & Creator Management (Agencies, Talent Networks) (MPAFAEAD)
- akta.pro secondary industry
- Multi-Channel Networks (MCNs) & Creator Management Platforms (MPACABAH)
Keywords
Where KEFIR is headquartered
LocationHeadquarters
- HQ city
- Agía Paraskeví
- HQ country
- Greece
- HQ region
- Europe
Offices2 records
Markets served
KEFIR business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- In-Game Virtual Items and Currency: Players earn, buy or obtain in-game currency to access virtual digital goods and items. Virtual currency and items are sold at Kefir's discretion with non-refundable final sales. Revenue generated from microtransactions within mobile games.
- Google Play Store Distribution: Distribution through Google Play with in-app purchases processed via Google's payment infrastructure.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Free-to-play base game with optional in-game purchases |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels4 records
KEFIR product offering
Product offeringCore offering
KEFIR is a mobile game development studio that designs, develops, and publishes free-to-play mobile games for a global audience. Its core offerings are three live-service mobile titles—Last Day on Earth (zombie survival), Frostborn (Viking multiplayer survival), and Sunday City (social city simulation)—monetized through in-game virtual currency and virtual item purchases, plus in-app advertising. The studio also runs a Creator Program for content creators and a Partnership Services program for external game development teams.
Product overview
KEFIR is a mobile game development studio operating a multi-game portfolio. The company develops and publishes three core mobile games: Last Day on Earth (zombie apocalypse survival), Frostborn (Viking mythology multiplayer survival), and Sunday City (city-life simulation). These games are available on multiple platforms including Google Play, Apple App Store, and various Android app stores. The company complements its game development with a Creator Program that supports content creators on YouTube, Twitch, and TikTok, and offers a Partnership Services program for external game development teams seeking publishing or collaborative support.
Differentiator
Problem solved
Functional benefit
Products and services
- Last Day on Earth A free-to-play survival mobile game set in a zombie apocalypse world where players fight crowds of the living dead, craft weapons, and survive against various zombie types with unique features. Available on Google Play and Apple App Store.
- Frostborn A free-to-play multiplayer Viking mythology-themed survival mobile game where players become immortal warriors cursed by goddess Hell, defending Midgard from invasion of the dead. Features PvP, raids, seasons, and mounts.
- Sunday City A free-to-play city-life simulation mobile game set in a city of eternal summer where players build careers, run businesses, find friends, and customize their experience with professions, pets, and social components. Built with Unity engine and Wwise audio.
- Creator Program A content creator collaboration program for YouTube, Twitch, and TikTok creators offering Associate and Partner tiers with benefits including Discord access, in-game resources, direct development team communication, giveaways, and early access to updates.
- Partnership Services A game development partnership program offering support through HR, project management, financing, publishing, and expertise for external development teams with ideas, projects, or teams seeking collaboration.
Companies that use KEFIR
Customer profileSegments2 records
Ideal customer profiles2 records
KEFIR technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration19 records
Feature2 records
KEFIR partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- DiscordcoreCommunication platform hosting creator program community spaces (closed Discord server) for Associate and Partner tier creators to collaborate and communicate with Kefir team.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
KEFIR competitors and assessment
Company assessmentBroad incumbents
- Zynga: Large incumbent mobile and social game publisher (FarmVille, Words With Friends), now part of Take-Two. Broadly comparable to Kefir as a leading multi-title mobile gaming platform player serving similar global freemium audiences.
- King Digital Entertainment: Mobile gaming giant (Candy Crush) owned by Activision Blizzard. Broad incumbent comparable to Kefir on mobile-first live-ops, IAP-driven revenue, and operating multi-title portfolios at global scale.
- Wildlife Studios: Brazil-headquartered mobile game developer/publisher. Comparable to Kefir as a multi-title mobile-first publisher with global distribution and freemium IAP model across mid-core and casual genres.
- Voodoo: Hyper-casual mobile game publisher at scale. Less directly comparable on genre (hyper-casual vs. Kefir's mid-core), but broadly similar in business model — global freemium mobile distribution and ad/IAP monetization.
- Rovio Entertainment: Mobile game studio behind Angry Birds (now SEGA-owned). Multi-game mobile publisher with global IP — broadly comparable to Kefir on mid-core mobile live-ops and global freemium IAP monetization.
Direct peers
- Outfit7: Mobile game studio behind Talking Tom and similar cross-platform IP, owned by a Chinese strategic investor. Directly comparable to Kefir on multi-game portfolio, mobile-only distribution, and global freemium model.
- Playrix: Major mid-core mobile game publisher with multiple top-grossing titles (Homescapes, Gardenscapes, Township). Closest comparable to Kefir on scale, multi-genre portfolio, and reliance on long-running live-ops with IAP-driven monetization.
- Mino Games: Mobile mid-core game publisher with viral hit titles. Comparable to Kefir as a similarly sized mobile-first publisher focused on live-ops and IAP monetization across a multi-title portfolio.
- Playgendary: International mobile game developer publishing multiple mid-core titles (Bowmasters, Tank Stars) with global distribution. Comparable to Kefir in studio scale, multi-game portfolio, and IAP monetization model.
- Habby: Mobile game studio behind Archero and other mid-core hits. Direct peer to Kefir given similar focus on mid-core skill-based gameplay, multiplayer survival mechanics, and global freemium distribution.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
KEFIR social profiles
Digital presenceKEFIR financial estimates
Financial estimateRevenue estimate
Valuation estimate
KEFIR leadership team
Management profileNumber of profiles
KEFIR funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
KEFIR M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about KEFIR
What does KEFIR do?
KEFIR is a mobile game development studio that designs, develops, and publishes free-to-play mobile games for a global audience. Its core offerings are three live-service mobile titles—Last Day on Earth (zombie survival), Frostborn (Viking multiplayer survival), and Sunday City (social city simulation)—monetized through in-game virtual currency and virtual item purchases, plus in-app advertising. The studio also runs a Creator Program for content creators and a Partnership Services program for external game development teams.
Is KEFIR a public or private company?
KEFIR is a private company. It is classified as unknown and is currently operating.
When was KEFIR founded?
KEFIR was founded in 2009. It employs 251 to 500 people.
Where is KEFIR based?
KEFIR is headquartered in Agía Paraskeví, Greece, in the Europe region.
How does KEFIR make money?
Two revenue lines are on record. In-Game Virtual Items and Currency is the primary driver. The others are google Play Store Distribution.
Who are KEFIR's main competitors?
Broad incumbents on record are Zynga, King Digital Entertainment, Wildlife Studios, Voodoo and Rovio Entertainment. Direct peers are Outfit7, Playrix, Mino Games, Playgendary and Habby.
Does KEFIR have an API?
No public API is recorded for KEFIR.
What industry is KEFIR in?
KEFIR's product category is Mobile Gaming. Its primary akta.pro industry code is MPAFAEAD, Multi-Channel Networks (MCNs) & Creator Management (Agencies, Talent Networks), with a secondary code of MPACABAH, Multi-Channel Networks (MCNs) & Creator Management Platforms. Its NAICS code is 5132.