Fifth Door unlocks the power of imagination by making it easy for everyone to create, share, and play games anywhere, with anyone. We exist to stimulate the creativity, connection, and joy that people get when they play games.
Fifth Door is a Y Combinator company in the Fall 2025 batch. Its directory entry describes it as: Create and play games with AI. The founders listed are Daniel Kan (Founder/CEO), Amir Ghazvinian (Founder/CTO) (Y Combinator directory entry, November 24, 2025).
Sell to companies like Fifth Door? Enter your website and see 10 with a filed reason to buy from you this month. Free.
Opens in a new tab. No signup.
New accelerator entry · 2025-11-24 · the record
Pitching, partnering or investing alongside them? See who really runs and owns Fifth Door.
Free to see. No signup.
More on Fifth Door and the records around it.
Get an email when Fifth Door changes status, grows its team or files a funding notice. One email first to confirm; nothing else until you click it. At most one a day, one click to stop. Free for up to 3 companies.
We'll show it in your MentionFox inbox when Fifth Door raises, hires or launches. No email unless you switch it on.
Watch Fifth Door →Get the full cited report on Fifth Door
Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
A Full Report on Fifth Door: verified, sourced, every claim cited, ready in a few minutes. See pricing.
Saved here on this device in the meantime, so nothing is lost either way.
Fifth Door unlocks the power of imagination by making it easy for everyone to create, share, and play games anywhere, with anyone. We exist to stimulate the creativity, connection, and joy that people get when they play games.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
A Full Report on Fifth Door: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Fifth Door covers
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
Not ready to order yet? Keep this snapshot.
Sends this preview to you once; we won't add you to any list
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist Fifth DoorYou get an alert in MentionFox the next time this company shows up.
If you're behind Fifth Door: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. GetFoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.
Sourced from the company's Y Combinator directory entry.
Each opens in a new tab, filled in for Fifth Door. With no account yet, you sign up free and land on the result.
Share the news. Sharing needs no account.
https://mentionfox.com/funding/yc-fifth-door