A team, not a chat
Mix Claude, ChatGPT and Grok on one game.
Give each AI a job. One builds, one plays the game and scores every round, one plans the art. They work on the same game side by side, and every change is saved so you can undo anything.
Black FridayLifetime license $59 · first 100 seats · opens Nov 27
Describe a game. Play it while AI builds it.
Marker ADE is the Mac app where a team of AI agents builds, tests and films your browser game, using the Claude, ChatGPT or Grok plan you already pay for.
No codingNo API keys neededUses your AI plan30-day money back
Runs on the plan you already have
Claude
ChatGPT
Grok
ClaudeChatGPTGrokHow it works
From one sentence to a game people play.
- 1
Sign in with your AI plan
Claude, ChatGPT or Grok, on their own sign-in page. Marker ADE never sees your password.
- 2
Describe your game
"A dragon that burns a harbour town at sunset." The AI builds the first version and names it.
- 3
Play it while it gets better
The game runs beside the chat. Ask for changes, or let a team of AIs keep improving it.
- 4
Film it and share it
One click cuts a trailer and a Short. One more puts it on marker for players.
Keep improving
It plays your game and makes it better.
Press Keep improving and walk away. Rounds of art, build and review run on their own, each with a score. Keep the rounds that got better, undo the rest.
Your accounts, one place
Every AI plan you pay for, in one app.
Sign in with Claude, ChatGPT or Grok on their own pages. See how much of each plan you have used before you hit a limit, and switch any chat to another account in one click.
Studio
Film the trailer in one click.
Record real gameplay, then get an intro, an outro, B-roll and a vertical Short cut for you. Add a voiceover with a teleprompter. Ready for YouTube, TikTok and Instagram.
Share
One click and people are playing it.
Share your game on marker, where players play it free in their browser, upvote it and send you feedback. The best games each month are featured on YouTube.
Why an app
A chat can write a game. This makes one.
A browser chatMarker ADE
Your gameA preview inside one chat threadA real folder on your Mac, playing beside the chat
TestingYou play it and describe what brokeAn agent plays it and scores every round
MistakesScroll back and hope the old version worksEvery change is a checkpoint you can undo
More than one AIOne chat, one modelClaude, ChatGPT and Grok on the same game
VideosRecord your screen yourselfClips, intro, outro and a Short in one click
SharingHost the file yourselfOne click to marker, where people play it
Launch pricing
Pay once. Keep it for life.
Three tiers, each with a fixed number of seats. When one sells out, the next opens at a higher price and the old price is gone for good. The counts are live.
$59once · lifetime
100 seats, until they're gone or Cyber Monday ends
100 of 100 left
Black Friday opens in
–d –h –m –s
One email when the $59 seats go live. Nothing else.
$89once · lifetime
200 seats
Locked · opens after Black Friday
$119once · lifetime
300 seats
Locked · opens after Early
Every tier gets the same thing.
The only difference is the price. The planned price after launch is $149 with one year of updates; launch buyers keep every update for as long as Marker ADE is made.
30-day money back. Not for you? Full refund, no questions asked.
- The Marker ADE Mac app (Apple silicon and Intel)
- Every update we ever ship, free, no subscription
- Mix Claude, ChatGPT and Grok agents on one game
- Workbench, Keep improving, reviews and art direction
- Studio: gameplay clips, trailers and Shorts
- One-click sharing to marker
- Use it on all of your own Macs
You also need one paid AI plan: Claude Pro or Max, ChatGPT Plus or Pro, or SuperGrok. Marker ADE works through it, so you don't need API keys and the work counts toward that plan's limits. "Lifetime" means for as long as Marker ADE is made and sold; we can't control changes the AI providers make to their plans. This is a pre-order: your license is in your marker account the moment you pay, we email you the Mac download the day it's ready, and you can get a full refund any time before then. Prices in US dollars; sales tax may apply. Marker ADE is not affiliated with Anthropic, OpenAI or xAI.
What does “lifetime” mean?
You pay once and the license never expires. You get every update we ship, with no subscription, for as long as Marker ADE is made. Launch buyers keep that forever, even if the regular price changes to something else later.
Do I need an AI plan too?
Yes, one paid plan: Claude Pro or Max, ChatGPT Plus or Pro, or SuperGrok. Marker ADE signs in to it on the provider's own page and the work counts toward that plan's limits. No API keys, no separate AI bill. Free AI accounts won't work. We can't control what Anthropic, OpenAI or xAI change about their plans, but Marker ADE works with all three so you are never stuck with one.
When do I get the app?
This is a pre-order. The moment you pay, your license and seat number are in your marker account. Marker ADE is in final testing; we email you the Mac download the day it is ready, and lifetime buyers get it first. If you would rather not wait, ask for a refund any time before it ships.
Can I get a refund?
Yes. Full refund within 30 days of buying, or any time before the download is ready, no questions asked. Reply to your license email.
Do I need to know how to code?
No. You describe what you want and play the result. The code is there if you want to look.
What can it make?
Browser games in one HTML file, 2D and 3D: cozy builders, platformers, racers, shooters, dungeon crawlers. They run on any computer with a web browser, and you can share them anywhere.
Which Macs?
Apple silicon and Intel Macs on macOS 12 or later. Use it on all of your own Macs. Windows is not available.
Who owns the games?
You do. Every game is a plain HTML file in a folder on your Mac. Nothing is shared unless you press Share.
Why are there seat limits?
To reward the first people who back it. Each tier has a fixed number of seats and the counts on this page are real. When a tier sells out it never comes back, and the next one opens at a higher price. The Black Friday price ends when its 100 seats are gone or when Cyber Monday ends, whichever comes first; then the Early tier opens. After the launch tiers, Marker ADE will be $149 with one year of updates.