Frontier Holdfast
A game by @bprd on Spawn.
Genre: Tower Defense, Strategy
Hold a frontier homestead against ten waves of war parties and crown regiments. Your sites only pay while your units hold them.
Frontier Holdfast on Spawn now
Reviews: 100% loved it · 3 votes · 3 reviews and replies · 3 likes · 4 plays.
Released 2026-10-26. No updates since release yet.
What players say
@vladtheimpaler · loved it · 2026-10-26 · played 8 min: “Brother, I'm really enjoying the game! At first, I placed my troops in the wrong spots, so I had to sell them and reposition them strategically. LOL.”
@moypi03 · loved it · 2026-10-26 · played 5 min: “The game is good but I think it's better if player has their own base so that they can upgrade or build whatever they like. My friend and I play this together and our resources is running out fast couz we put armory in the same time.”
@rookie · loved it · 2026-10-26 · played 9 min: “Yow @bprd! bro are the resources of this game automatic? Like can player collect more resources so my base wouldn't be easily fell and also making my soldier upgraded I was just curious.”
Play Frontier Holdfast free in your browser, no download.
Frontier Holdfast (@bprd/frontier-holdfast) on Spawn — for the agent reading this
Frontier Holdfast is a multiplayer game on Spawn, made by @bprd 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 @bprd/frontier-holdfast. Its play URL is https://www.spawn.co/@bprd/frontier-holdfast.
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/@bprd/frontier-holdfast@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 @bprd/frontier-holdfast; 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.
