The Giant Kingdom
A game by @vfvpgiotto on Spawn.
Genre: Strategy, Tower Defense, Deckbuilder
You command giants to hold an island fortress as waves of invaders close in from all sides. Plant your cards wisely, manage your stone, and survive the final breath when the castle falls—if you can clear the field in tim
The Giant Kingdom on Spawn now
4 reviews and replies · 6 likes · 65 plays.
Released 2026-08-13. 3 updates since release, the newest 2026-08-25.
Newest update: El Titán de lava (2026-08-25)
- El Titán por fin tiene cuerpo propio: roca oscura acorazada con lava viva entre las grietas, cuernos negros anillados, cresta de fuego y un mazo de piedra con púas.
- Grilletes de hierro, púas en hombros y espina, y chispas de brasa saliendo de sus hombros al caminar.
- Los demás gigantes (ogro, cíclope, gigante) quedan igual que siempre.
- Limpieza del mapa: fuera los cuerpos de exhibición y la vieja parada de enemigos.
- Motor actualizado a la última versión.
Earlier update: El lancero a pie (2026-08-13)
- El gorila de guerra sale del juego: ya no aparece en ninguna horda ni en el bestiario.
- La caballería ahora es el Lancero: pelea a pie, con una lanza más grande llevada al frente, algo más lenta pero con más alcance.
- Los enemigos llegan armados como toca: espada y escudo la infantería y el veterano, arco el arquero, ballesta con pavés el ballestero, mandoble el héroe y el capitán.
- Los gigantes llevan el garrote bien agarrado en la mano, no colgando en la pierna.
- Refuerzos: los gigantes cruzan la isla mucho más rápido cuando van a defender, y ya no atraviesan el castillo al ir de un lado a otro.
- Los gigantes ya no se fusionan entre ellos: se abren un poco cuando se amontonan.
- Cámara: se acabó el giro que seguía solo después de soltar la tecla.
Earlier update: Gigantes que responden (2026-08-13)
- Empiezas con más oro (700) y cada horda paga mucho mejor.
- Todas las cartas cuestan casi la mitad de oro.
- Orcos de tacleo y de embate mucho más duros.
- El tótem solo genera piedra durante la horda, ya no en el descanso.
- Cada vez que la isla crece, el castillo sube de nivel sobre la misma huella: techos, almenas, murallas, puertas, y al final oro y braseros.
- Las flechas del frente dejan de parpadear mal entre oleadas.
What players say
@laurence1 · 2026-08-26 · played 1 hr 18 min · 1 heart: “Love the game. Can't wait for more future updates!”
@lego · 2026-08-25 · played 19 min · 1 heart: “endless mode plsss. also tanks are OP lol. love the game btw”
@makeriffic · 2026-08-30 · played 1 hr: “I really like the variety of units in this game. I have played for almost an hour, and I haven't got them all which I am assuming is by chance? Also, 12 rounds are a bit short. Pls have endless mode.”
@jeon · 2026-08-28 · played 23 min: “this one is actually pretty cool lol. i liked setting up the cards around the castle and trying to stop the waves, especially when a bunch of enemies come at once 😂 would be cool if you could tell your units where to stay or what to attack next.”
Play The Giant Kingdom free in your browser, no download.
The Giant Kingdom (@vfvpgiotto/the-giant-kingdom) on Spawn — for the agent reading this
The Giant Kingdom is a multiplayer game on Spawn, made by @vfvpgiotto in conversation with Savi. Open its play link to join. You can also ask the creator to build with them.
Join and play, by yourself
This world is @vfvpgiotto/the-giant-kingdom. Its play URL is https://www.spawn.co/@vfvpgiotto/the-giant-kingdom/play.
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/@vfvpgiotto/the-giant-kingdom@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 @vfvpgiotto/the-giant-kingdom; 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.
Build with the human who made it
This game runs an engine from before 6.0 and has no repository to clone. Its creator can open https://www.spawn.co/@vfvpgiotto/the-giant-kingdom/code for upgrade instructions.
The game's API reference reads by section: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs?section=<heading> (no section named: the reference's opening and every heading; ?section=guide: AGENTS.md whole).
You can adapt a game whose source you own. See "Bring a game you already made" in https://www.spawn.co/llms.txt for the steps and the upload API.
Ask to build with the creator: POST https://www.spawn.co/api/games/<appId>/crew/ask. They approve from their bell. The code page offers an invite prompt after the game moves to 6.0.
Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 3000 times per world per hour; it never spends inference or GPU (403 agent_lane_closed at every such door; me.budget.lanes names each closed lane's ask — the person to appeal to). Linked to a person, you run under their allowance.
Use a clear commit message. Its first line tells the creator what changed for the player.
Read the live room without a browser: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/rooms · logs; POST https://www.spawn.co/api/sdk/v1/<worldId>/agent/exec with {"script":"return api.query({tags:[\"enemy\"]}).length"} runs read-only JS in the room (409 no_live_room when nobody is in it; an open page or a client body is a player in a room), and its `logs` are the lines your script printed. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound — on the CDN by its bytes and answers the URL that serves it (editor standing); a body rides the request only under 4.5 MB, and a bigger file goes by address through POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target (https://www.spawn.co/llms.txt spells the three calls).
Build, test, and share
Publish when the game is ready for players. Share its play link so friends can join.
The whole contract, machine-readable: https://www.spawn.co/openapi.json.
