SHELLRUNNER

Newest update: PUSH EM BACK (2026-10-15)

• Three new crowd control weapons: Flail, Cryo Relay and Icecaster.
• Frost is here: chill, freeze and shatter the swarm.
• New elemental cards like Thermal Shock, Impact Wave and Barbed Chain.
• Cleaner end-of-run screen with your stats, a tip and your loadout.
• Local and Online Co-Op are coming soon.

Earlier update: Dead City Passage (2026-10-10)

• The path beyond the boss now opens up—run straight through to a new bench and jump across to the seam.
• The ending's lights stay steady as you pass through; no more black flicker when you beat the boss.
• Explore arrow glows teal and nudges right to guide you forward, appearing 20 seconds after the boss falls.
• Runs feel fuller: more enemies spawn after 3 minutes, healing drops less often, and early levels ease up so you can build momentum.
• The Deconstruction log text holds still while the world shakes around it—words stay readable all the way to the end.

Earlier update: Armory Expanded (2026-10-09)

• Armory now logs Systems and Modifiers: two new sections under Weapons, silhouettes for undiscovered, NEW labels, and system levels reached.

What players say

• @chizkeykkk · loved it · 2026-10-15 · played 10 min · 1 heart: “I love the gameplay! It felt so satisfying collecting cache and upgrading my weapons to survive longer. Just curious, though, is the scoreboard legit? The scores unbelievably high 😅😭”

  • @monoglyph (maker) replied 2026-10-15: “Thank you so much! Gameplay is king, it's gotta be fun and snappy! The scores are all legit. I just set one myself at 354, 071 😎 The key is to ignore the quick boss kill bonus and avoid it as long as you can while staying alive. It's definitely a game you get better at the more you play. Cheers! 🤍”
  • @chizkeykkk replied 2026-10-15: “@monoglyph Dang, that’s awesome! Thanks for the tip. I’ll try that one 😂 Just curious, though, if my weapon is already at level 3 and it shows up again in the choices, will it upgrade to a higher tier or stay at level 3?”
  • @monoglyph (maker) replied 2026-10-16: “@chizkeykkk Right now, weapon upgrades max at level 3, so after that it won't show up any more, but there are other perks that alter the weapon in other ways, or overall damage type modifiers too. Eventually, I want to add more levels to the weapons, but I need more content first. The main thing is to find synergies. You have 4 weapon slots, so sometimes it's worth waiting for one to drop that you want. But that's assuming you're surviving ok - getting a 2nd weapon asap is usually the right call”
  • 2 more replies

• @jeon · loved it · 2026-10-08 · played 6 min · 1 heart: “Haha this gameplay is really unique bro! The 2D graphics fit the game so well, and I love having the sword swing around me to protect me every few seconds 😂. It makes fighting enemies feel satisfying!”

  • @monoglyph (maker) replied 2026-10-08: “Heck yeah! Glad it's satisfying! Give it a few more goes, get lucky with the drops, and see if you can take down the boss for a special new story area”

• @moypi03 · loved it · 2026-10-09 · played 26 min: “the gameplay feels like I'm back on my teenage bro I feel like old hahaha but overall the movements smoother than the old school games like this and hope to try another weapon in my next deployment!”

  • @monoglyph (maker) replied 2026-10-09: “Love to hear that! Shellrunner's all about the movement. Got 6 weapons that go up to lv 3 each and 34 perks in the game right now with plans to add a bunch more, plus more enemies, levels, endless mode, etc if people are into it!”

Join and play, by yourself

This world is @monoglyph/shellrunner. Its play URL is https://www.spawn.co/@monoglyph/shellrunner.

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/@monoglyph/shellrunner@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 @monoglyph/shellrunner; 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

With build access, clone https://git.spawn.co/@monoglyph/shellrunner.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.