Invites well-developed medium-heavy and heavy euro games. Stated preferences are 2–4 players, 60–150 minutes and BGG weight 2.7–4.1; these are target ranges, not unconditional eligibility guarantees.
Stated interests
Interconnected mechanisms including worker placement, engine building, contracts, networks and rondels
Positive player interaction; a two-player option; solo mode welcomed
Restrictions and fit cautions
Party, family, adventure and dexterity games
Negative interaction, push-your-luck, real-time mechanisms and excessive output randomness
Materials and next-step notes
Requested materials
Game title and designer names
Concise explanation of the game's main features
2–3 minute video explaining the concept, mechanisms and unique selling points
Preferred / optional
Digital prototype such as TTS; not required
Interested submissions may lead to an online rules explanation and playtest. No fixed response deadline is published here.
Accepts distinctive game ideas through its official form. The German-language guidelines cover children's games and innovative simple-to-medium family/adult games.
Stated interests
Children's games usually age 5+, occasionally 3+
Family/adult designs generally age 8 or 10+, usually no longer than 90 minutes
Distinctive ideas aligned with the current catalog
Restrictions and fit cautions
Unsolicited ideas, rules, prototypes or finished games submitted outside the form are not processed
Materials and next-step notes
Requested materials
Complete the official game-idea form as fully as possible
A developed game with rules tested by people unfamiliar with it
Preferred / optional
Images or videos showing the idea and at least one complete turn
Review can take up to three months. KOSMOS contacts designers only when interested and asks that designers do not request status updates. Send a prototype only if requested.
Explicitly accepting complete, playtested tabletop designs with near-final rules. It values a strong theme, interaction, a distinctive hook and smooth play.
Stated interests
High player interaction and broad player-count support
Strong themes, a clear hook and manageable turns
Restrictions and fit cautions
RPGs
Complicated turns and extensive in-game maintenance are poor fits
Materials and next-step notes
Requested materials
Complete submission form with pitch, gameplay description, testing history and feedback
Complete, independently playable game and near-final rules
Preferred / optional
Digital prototype strongly encouraged
Links to rules, videos and images preferred to attachments
Review timing is not guaranteed. They request prototype access if interested. Requested physical prototypes and their return are shipped at the designer's expense.
Not accepting game submissions because its development queue is full. A separate art/design portfolio invitation does not reopen game-design submissions.
Restrictions and fit cautions
New game submissions are currently closed
Materials and next-step notes
Do not pitch a new game while this closure notice applies. Artists can review the separate portfolio opportunity on the same page.
Invites prototypes through its form. Mainly seeks original medium-heavy/heavy euro games, often 60–180 minutes, but explicitly remains open to other categories including party and children's games.
Stated interests
Unique mechanisms and twists; originality; nonviolent games
An explanation of why the design fits CGE
Restrictions and fit cautions
RPGs
Designs too similar to existing games
Games playing in less than 20 minutes
Materials and next-step notes
Requested materials
Designer names and contact email
Game name, short description and reason for choosing CGE
Preferred / optional
English-language video and digital implementation, if available
Rulebook upload field is provided; the visible page does not mark it required
The page asks for patience and gives no fixed response time. Its euro-game focus does not exclude every party or children's design.
Actively seeks well-researched historical military games. Its Golden Age Collection also invites accessible hybrids of traditional wargames with other tabletop genres.
Stated interests
Thorough testing, meaningful decisions, replayability and balanced outcomes
Solitaire play preferred; Golden Age hybrids should have a solo mode or one in development
Restrictions and fit cautions
Golden Age Collection: no NSFW content or party games
Materials and next-step notes
Requested materials
Brief introduction explaining theme, mechanisms and distinctiveness
Current complete rulebook
Shared folder of prototype assets
Designer name and preferred contact information
Preferred / optional
Playable TTS or Vassal prototype; optional
Identify Golden Age submissions in the initial email. Send a physical prototype only if requested; a prototype request does not imply publication acceptance.
The announced Fear challenge runs until November 30, 2026, 11:59 PM EST. The available official-page view still marks its entry form forthcoming; live availability remains unverified. This does not establish general unsolicited-submission availability.
Stated interests
Complete, original 18-card games about fear, with no extra components
Restrictions and fit cautions
Gore; AI-generated content or artwork
Designs for sale or under consideration by another publisher
Materials and next-step notes
Requested materials
Game description and designer names
Print-and-play rules and game files
Pitch video of at most one minute
Exactly 18 poker-sized cards; rules within two US Letter pages, minimum 10-point type
One entry per designer, including co-designs. Designers must be 18+ or co-design with a parent/guardian. The page says not every entry receives feedback. Review all restrictions before entering.
