Indie Dev Ships Games Fast with AI Agent Astra

Episode 1 · Developer builds explorable universe game with Astra (2026-09-05, 4 posts)

Developer Dimillian used OpenAI's Astra model to build Void Explorer, an online space game with real Earth-sized planets and star systems, praising its procedural 3D generation—though the demo only got 20k views.

• Dev builds playable space game Void Explorer entirely with Astra, rendered in threejs and WebGPU — Dimillian · 2026-09-05
• Indie dev builds space game with hundreds of star systems using OpenAI's Astra, shares full workflow — Dimillian · 2026-09-05
• Dimillian tests Astra: strong at procedural 3D, ships playable game — Dimillian · 2026-09-05
• Dev's favorite Astra demo buried at 17k views: AI-generated universe of explorable Earth-sized planets — cyrus_zei · 2026-09-06

Episode 2 · Dev Uses Astra Agent's Fast Feedback Loop to Polish AI-Generated Game (2026-09-06, 2 posts)

Dimillian reports spending 90% of his time collaborating with Google's Astra agent, using a play-and-fix feedback loop to iterate on fast travel, combat and first-person controls.

• Dev uses Astra agent to refine game combat while live-playing in a quick feedback loop — Dimillian · 2026-09-06
• Follow-up: dev iterates on AI-generated game, polishing fast travel and combat feel — Dimillian · 2026-09-06

Episode 3 · Dev Builds Playable Daggerfall-Inspired Game Codexfall End-to-End with Astra (2026-09-06, 5 posts)

Developer Dimillian demonstrated building Codexfall, a Daggerfall-inspired procedurally generated game, end to end with the AI coding tool Astra, as a test of how well an AI agent can bring a full game world to life. The game is playable in the browser and serves as a concrete benchmark for AI agents on large-scale projects.

Confirmed

• Workflow: Dimillian had Astra list all systems the game needed, turn the list into a roadmap document for tracking, then build the first vertical slice containing all core systems in ultra mode.
• Content: Codexfall is a large procedural world with towns, dungeons, combat, talkable NPCs, plus magic and guild systems — a first-person dungeon crawler themed around steel, magic and ruin exploration.
• End-to-end generation: the trailer, including its soundtrack, was made entirely by Astra; entering any seed on the new-game screen generates a brand-new world.
• Iteration: Dimillian iterated from actually playing the game, polishing fast travel, combat feel and the first-person perspective.

Why it matters

• The project shows AI agents covering not just code but system planning (roadmap docs), music, promo video, and seed-based procedural content generation — a fairly complete stress test of end-to-end agent development.

• Codexfall: dev builds Daggerfall-style procedural world with Astra — Dimillian · 2026-09-06
• Codexfall: Daggerfall-inspired game built with Astra, towns, dungeons, guilds included — Dimillian · 2026-09-06
• Dev uses Astra on ultra to blueprint systems and build a game's first vertical slice — Dimillian · 2026-09-06
• Dev iterates Codex-built first-person dungeon crawler Codexfall, playable in browser — Dimillian · 2026-09-06
• Astra made its own game trailer including music, generates worlds from seeds — Dimillian · 2026-09-06