Buttercup — Cake Studio

Newest update: Dragon Halloween (2026-10-20)

• Halloween is here: spooky visitors, new Story wishes and a haunted bakery look.
• Fancy dragon toppers: baby dragon, dragon egg, wings, hoard coins, ember gem and dragonfire kisses.
• New jade dragon, ember dragon and potion cauldron stands, plus Dragon's Lair and Haunted Castle Tea backdrops.
• Halloween gifts are free to claim in the shop, and all the regular items are still there.
• Nine new quests, including three dragon quests, and a prettier dev log.

Earlier update: Buttercup — Cake Studio Update (2026-09-22)

• Cake Market is open: decorate freely and tap Serve to reveal your cake’s value—no set prices or customer requirements. Bake solo or share a Market cake with friends; each contributing baker earns coins and a best-sale record. Story and quest tasks now show where to find each tool, topping or decoration.

Earlier update: Buttercup — Cake Studio Update (2026-09-22)

• Story customers now mix drizzle, leaf presses and shaped piping into their cake requests. Finishing replaces a piping task rather than adding extra chores, with matching customer checklists and reviews. Existing cakes, saved progress and Co-op orders keep their original rules.

Earlier update: Buttercup — Cake Studio Update (2026-09-21)

• Together is simpler: tap Free decorating or Co-op orders to open your shared cake directly. Removed the extra seat-list and join step. Your separate shared drafts, private cakes and progress stay safe.

Earlier update: Buttercup — Cake Studio Update (2026-09-21)

• Autumn arrives at Buttercup: four new sponge flavors and icing colors, seasonal toppings, decor and boutique pieces. Drizzle and Leaf press now show immediate local previews, with painted Maple, Oak and Acorn tool icons. Together gains Co-op orders: complete shared customer requests with a friend for one-time coin rewards, while keeping a separate free-decorating cake. Story has its own start-screen entrance again and resumes your saved progress. The two-page Dev log and Updates notice covers the changes, with Halloween coming soon.

What players say

• @mistarpudding · 2026-09-15 · played 32 min · shown first by the maker: “me and my friend were making a cake together and it was kinda funny seeing our creation. we did notice some delays, but it was bearable. when i clicked on undo, thats when we experienced a real bug. after clicking on undo, my cake had a chocolate sponge, while his had ube. start new fixed it though so we were able to make another cake :)”

  • @erika (maker) replied 2026-09-15: “Oooo thanks for checking I’ll go fix it but at least you both had a silly experience with it :)”
  • @mistarpudding replied 2026-09-15: “hi erika! new build just fixed all the delay issues! making cakes are way smoother now. love it!”
  • @erika (maker) replied 2026-09-26: “I’m glad it’s fixed.”

• @laurence1 · loved it · 2026-10-20 · played 5 min · 1 heart: “Hi @erikaaa! I hope you are having a good day! erikaaa game is so fun! I was just trolling on how much dollars can this be sell xD. Would recommend this to my little sis and the halloween vibes is so good! May you have a good day ahead erikaaa!”

  • @erika (maker) replied 2026-10-20: “I’m glad your liking the game :)”

• @lego · 2026-09-23 · played 26 min · 1 heart: “Here's my perfect cake, well, kinda lol. Honestly, this isn't really for me, but my niece would love this. In fact, I'm gonna share this with her now”

  • @lego replied 2026-09-23: “Aw man, it didn't capture the whole thing lol”
  • @erika (maker) replied 2026-09-23: “Cute cake and atleast she will like it :) I’m making a wacky pizza one soon so maybe that one you will enjoy more”

• @makeriffic · 2026-09-22 · played 16 min · 1 heart: “Yo, this cake is really expensive lol. I tried making a full pistachio one with chocolate chips as toppings and it turned out to be $450 I ain't buying that 😂 Great addition erika!”

  • @erika (maker) replied 2026-09-22: “I’m glad you like the new update 🤣 it was close to the $1000 price tag you mentioned.”

• @makeriffic · 2026-09-22 · played 16 min · 1 heart: “Yeah, Theo enjoy this full pistachio cake that's gonna be like $1000 lol. I like this game it is so addictive. Although some of the options really need time to find like the 'impressions' and whether it is under toppings or deco. Maybe you can add a category to each tasks?”

  • @erika (maker) replied 2026-09-22: “You actually gave me a great idea. What if I made a mode where you can make a cake and then like sell it and sing or the guest price point on the leaderboard hmmm I’ll add and it sure I’ll make these changes too.”

Join and play, by yourself

This world is @erika/buttercup-cake-studio. Its play URL is https://www.spawn.co/@erika/buttercup-cake-studio.

An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.

A world's address is a web page that any browser plays, headless included, with no sign-in. https://www.spawn.co/@erika/buttercup-cake-studio@dev is the world at its latest push to main: a push reaches every open page with no reload, and the game's console.log and script faults print in that page's console.

The packaged client stands a body from a shell: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @erika/buttercup-cake-studio; where, players and leave read and end it. A join with --render gpu draws on this machine's graphics card (--render cpu draws in software, and on a Mac on its graphics card), and Playwright plays the page it prints (chromium.connectOverCDP).

Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 1000 distinct bodies a day.