A Cosmos Video alternative with games, build mode and a Day Pass
Flat.social bills the same way as Cosmos Video, for the people online at once, and adds physics games, live build mode and speed networking to the room. Free for 5 people, $6 per seat after that. Watch the demo, then see how the two compare on pricing and the basics.
Free up to 5 people, no credit card required
Cosmos Video is a virtual office from a UK company with a clean 2.5D look, proximity conversations, and billing based on the people online at once. This page is about Cosmos Video, the virtual-office product, not NVIDIA Cosmos or the Cosmos discovery app. If you are searching for a Cosmos Video alternative, this page shows what Flat.social does and puts the two side by side on pricing and the basics.
Flat.social is a browser-based spatial workspace that bills the same way, per concurrent seat: a virtual office your team walks around with proximity audio, plus team socials and events in the same space. Built-in games run on a physics engine, you build the map live from inside the room, and a conference-grid room type covers all-hands and presentations. Free for up to 5 people at once with no time limit, $6 per seat per month after that up to 100 people, and a $2 per seat Day Pass for one-off events. It runs in the browser, nothing to install, and guests join from a link without creating an account. Full details on the pricing page.
Is Flat.social a good Cosmos Video alternative?
Flat.social is a browser-based spatial workspace that bills the same way as Cosmos Video, for the people online at once rather than every registered member. It costs $6 per seat per month, is free for 5 people at once, and lets guests join from a link without an account. It adds built-in games on a physics engine, timed speed networking, a live build mode and a $2 per seat Day Pass for one-off events.
How does Flat.social pricing compare with Cosmos Video?
Both bill on concurrent users. As of September 2026 Cosmos Video Premium is $8.80 per concurrent user per month ($7.70 on annual billing) with a free plan for 4 online users. Flat.social is free for 5 people at once, then $6 per concurrent seat per month from 6 to 100 seats, plus a $2 per seat Day Pass. Twenty-five seats for a month is $220 on Cosmos Video ($192.50 annual) and $150 on Flat.social.
Walk up and talk, with a physics engine under the floor
Proximity audio in Flat.social works the way it does in Cosmos: voices fade in as you approach and out as you leave, and groups form without anyone opening a call. The world around it is a low-poly 3D space seen from above, so the room can hold a football pitch as easily as a desk.
What you get in Flat.social
See flat.social in Action
Six things people do in a flat, straight from the front page.
Flat.social and Cosmos Video side by side
The table compares the basics: plans, what you pay for, how people join, and what is in the room. Cosmos Video figures come from its published pricing and support pages as of September 2026; Flat.social figures match the pricing page.
Flat.social vs Cosmos Video, side by side
| Flat.social | Cosmos Video | |
|---|---|---|
| Free plan | Yes, 5 people at once, no time limit | Yes, 4 online users in a space |
| Paid price | $6 per seat per month | $8.80 per concurrent user per month, $7.70 on annual billing |
| What you pay for | Concurrent seats you pick (6 to 100), not named users | Peak concurrent users, same model as Flat |
| 25 people for one month | $150 | $220 monthly, $192.50 annual |
| One-off events without a subscription | $2 per seat Day Pass, valid 24 hours | No event pass; 14-day trial, then Premium |
| Guests join without an account | ||
| Runs in the browser, nothing to install | Yes, Chrome, Edge and Firefox | |
| Spatial (proximity) audio | ||
| Video calls | ||
| Built-in games and activities | Football, poker, chess, dice, speed networking, whiteboards | None built in |
| Physics engine (objects roll, bounce, collide) | ||
| Edit the map live, from inside the room | Preset styles: minimal and vibrant | |
| Room types | Open spatial, conference grid, text chat | Spatial space with calls |
| Visual style | Low-poly 3D world, seen from above | 2.5D, minimal and vibrant styles |
| Max people in one space | 100 self-serve, more on request | 150 per space and per call, 500 on Enterprise |
| Open source / self-hosted |
Walk into a live Flat room
No account, no install. Open the demo room, walk up to someone and hear spatial audio work. Then create your own space, free for 5 people.
Pricing at a glance: Cosmos Video vs Flat.social
Cosmos Video and Flat.social use the same billing model: you pay for the people online at once, not for headcount. Cosmos charges for peak concurrent users; Flat.social charges for a capacity you pick, from 6 to 100 seats. The examples below are seat for seat. List prices as of September 2026.
A 25-person team, one month
- Cosmos Video: 25 concurrent users × $8.80 = $220 ($192.50 on annual billing)
- Flat.social: 25 seats × $6 = $150
A 60-person company where about 20 people are online at the same time
- Cosmos Video: 20 concurrent users × $8.80 = $176 ($154 on annual billing)
- Flat.social: 20 seats × $6 = $120
A one-off event for 100 people
- Cosmos Video: a month of Premium at 100 concurrent users = $880
- Flat.social: 100 seats × $2 Day Pass = $200, valid 24 hours, cancel free until the day before
Trying it out
- Cosmos Video: free for 4 online users, or a 14-day Premium trial
- Flat.social: free for 5 people at once, no time limit
Both sets of figures can change. Current Flat.social plans are on the pricing page.
Free: up to 5 people in your flat at once. Monthly: $6 per seat per month, from 6 to 100 seats. Day Pass: $2 per seat for a one-off event. A seat is one concurrent spot, not a named user, and every room holds up to 100 people. See pricing and plans & limits.
The Friday social lives in the same room as the standup
Flat.social puts a football pitch with a scoreboard, a poker table, chess and dice inside the room, running on a physics engine so the ball rolls and the dice tumble. The people who skip socials turn up for the match, and the standup that follows is easier for it.
Coming from Cosmos Video? Set up Flat.social in an afternoon
Most teams pick a template, shape it in build mode and run their first standup the same day.
- 1Create a free workspace
Sign up with Google or email and name your space. The free plan covers 5 people at once with no time limit, so you can try it properly before paying anything.
- 2Pick a map and shape it
Start from a template, then open build mode and drag in what you use: a standup corner, a couple of desk clusters, a lounge with a football pitch or a poker table, a whiteboard wall. Keep it compact; a snug office feels busier than a sprawling one.
- 3Set roles
Decide who can build, who can moderate, and what guests can do. Roles and access controls are on the Monthly plan; on Free everyone can walk around and talk.
- 4Share one link
Pin the room link in Slack or Teams. Teammates open it in a browser. Guests type a name and join without an account. Nobody installs anything.
- 5Run the first real thing today
A standup, a Friday social, a speed-networking round for new hires. The habit forms around the first useful session, not the perfect layout.
Build the office from inside it
Open build mode while your team is in the room and drag in desks, lounges, whiteboards and games. There is no separate editor and no publish step. Your own maps and look are included on the free plan.
Cosmos Video alternative: common questions
Other Cosmos Video alternatives worth knowing
Each of these takes a different approach to the same idea, and we keep a comparison page for each one.
- Kumospace: Rendered 2.5D office floors with browser, desktop and mobile apps. See our Kumospace alternative page.
- WorkAdventure: Open-source and self-hostable, with a pixel-art world and maps built in Tiled. See our WorkAdventure alternative page.
- SoWork: An isometric 2.5D world with AI-assisted map generation and native apps. See our SoWork alternative page.
- Gather: A pixel-art 2D world with proximity audio and a dedicated map editor. See our Gather alternative page.
For a broader survey of the category, including tools that are not spatial at all, see the best virtual office tools and free virtual office options.
Give your team a space to walk around
Spatial audio, built-in games, live build mode and one link for guests. Free for 5 people, $6 a seat after that. Set-up takes about a minute.