What Solitr does

Solitr is a free browser-based Solitaire card game service accessible at solitr.com with no registration, no download, and no paid tier. The product runs entirely client-side using HTML, CSS, and JavaScript and offers multiple variants including Klondike (Turn One) and Spider Solitaire in one-, two-, and four-suit formats. The site is positioned as an entry point for casual players searching for unblocked, instant-play solitaire content, and the company has extended this template to two adjacent game properties — mahjon.gg (Mahjong) and sudoku.game (Sudoku) — under the same corporate umbrella.

The company was created in November 2011 by an individual identified as "Jo" and is now owned and operated by Sinopia Olive Limited, a UK private limited company (company number 10151298) registered at 11 Raven Wharf, Lafone Street, London, SE1 2LR. There are no disclosed employees, no funding rounds, no patents, and no third-party partnerships; the business appears to be run as a lean, founder-controlled portfolio of small web properties rather than as a venture-backed operation.

Revenue is generated entirely through advertising on the free browser experience, specifically via Google DoubleClick, with no subscription, in-app purchase, or premium tier. The privacy policy was last updated in January 2018, and there is no mobile app, no user account system, and no data-collection flywheel — meaning the business model is structurally a CPM-driven, search-traffic-mediated display ad play across three small casual-game properties.

Name

Solitr

Legal name

Sinopia Olive Limited

Website

https://solitr.com

Company type

Private

Founded year

2011

Operating status

Operating

Short description

Solitr operates a free, browser-based Solitaire card game with no download or registration, alongside two adjacent casual game sites (mahjon.gg and sudoku.game). The properties, owned by UK-based Sinopia Olive Limited, monetize exclusively through Google DoubleClick display advertising.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Infrastructure, Technology or R&D, Operations, Personnel

Revenue model

1. Advertising: The site uses Google DoubleClick cookies to serve advertisements and track ad performance. Revenue is generated through display advertising displayed to users visiting the free game.
2. Freemium Model: Core Solitaire games are provided free of charge to users. The site operates as a free-to-play platform generating revenue from ad impressions.

Distribution channels1 record

Marketing channels1 record

Core offering

Solitr is a free, browser-based online card game platform that offers multiple variants of Solitaire, including Klondike Solitaire (Turn 1 and Turn 3) and Spider Solitaire (1, 2, and 4 suit variants). The platform requires no registration, no download, and no payment, providing instant gameplay directly through a web browser on any device. It is monetized through display advertising served via Google DoubleClick.

Product overview

Solitr is a single-page web application offering free online card games. The core product is Klondike Solitaire, with variants including Turn One (turning one card at a time) and multiple Spider Solitaire variants (1 suit, 2 suits, and 4 suits) of increasing difficulty. The site is operated by Sinopia Olive Limited and also references linked properties for Mahjong and Sudoku on separate domains, but these are not part of the Solitr product offering itself.

Differentiator

Problem solved

Functional benefit

Brands

• Spider Solitaire (2 Suits): Free online Spider Solitaire game variant with 2 suits
• Spider Solitaire (4 Suits)
• Spider Solitaire
• Klondike Solitaire, Turn One

Products and services

• Klondike Solitaire The classic Klondike Solitaire card game played online through a web browser. Players move cards between the waste pile, seven tableau columns, and four foundations, with the goal of building each foundation from Ace to King by suit. Free to play with no registration or download required.
• Klondike Solitaire (Turn One)

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators2 records

Recent moves2 records

Expansion highlights2 records

Direct peers

• 247Solitaire: 247Solitaire is a long-running free online Solitaire site offering dozens of card-game variants with display-ad monetization — same browser-based, ad-funded, no-registration model as Solitr targeting the same casual card-player segment.
• World of Solitaire: World of Solitaire is a free browser-based site offering dozens of Solitaire variants with statistics tracking and ad-supported monetization. Directly comparable to Solitr in product (classic Solitaire variants), distribution (browser, no download), and revenue model.
• MobilityWare: MobilityWare is one of the largest mobile Solitaire publishers (Solitaire, Spider Solitaire, FreeCell) with hundreds of millions of downloads. Comparable to Solitr in product focus on classic card games for casual players, though it operates as a native-app publisher rather than a browser site.
• Solitaired.com: Solitaired is a free browser-based Solitaire site offering Klondike, Spider, FreeCell and other variants with ad-supported monetization — directly overlapping Solitr's product, distribution model, and target audience of casual Solitaire players.
• Solitaire Bliss: Solitaire Bliss is a free browser-based site offering multiple Solitaire variants (Klondike, Spider, FreeCell) with ad-supported monetization. Closely comparable to Solitr in product scope, distribution, and casual-card-player target audience.

Broad incumbents

• Arkadium: Arkadium operates a large portfolio of free browser-based casual games (including Solitaire) with an ad-supported business model and works directly with major publishers. It competes with Solitr in the same ad-funded casual-games channel but at significantly greater scale and breadth.
• Pogo.com (EA): Pogo, owned by Electronic Arts, hosts a broad catalog of free browser-based casual games including Solitaire variants with ad and subscription monetization. It targets the same casual-gamer persona as Solitr but as a multi-game destination rather than a single-product site.
• Microsoft Solitaire Collection: Microsoft Solitaire Collection is bundled with Windows and offered as a cross-platform app — the dominant incumbent in the Solitaire category. It competes for the same casual card-player audience but enjoys OS-level distribution that Solitr cannot match.

Emerging players

• Zachtronics: Zachtronics publishes Solitaire-based and card-based puzzle games such as Solitaire Encore and Last Call BBS. Comparable to Solitr in the Solitaire/puzzle-card space, though positioned as a paid indie-game studio rather than an ad-supported free-to-play site.

Regional players

• AARP Games: AARP Games offers free browser-based Solitaire and other casual card games to its U.S. membership audience with ad and sponsorship support. Comparable to Solitr in product format and ad-funded model, but constrained to AARP's older U.S. demographic and distribution channel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key highlights6 records

Customer concentration

• Xx.com/solitrnet

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solitr