SimCFB by @nick050183

Sports, Simulation, Strategy · Claude Code + Codex

SimCFB

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Opens simcfb.com in a new tab

Works on phones and computers

You coach one of 68 major college programs for as many seasons as you like, handling the recruiting board, the NIL budget, the transfer portal, weekly practice plans and your staff. On game day you choose how much to do yourself, from simming straight to the final score to picking formation and play for every snap, and each play runs out with 3D players in a full stadium. A Quick game mode skips the career and drops you into a single matchup, and nothing needs an account. Teams appear under their real school names and conferences with made-up mascots. Works on phones turned sideways and on computers.

How the creator made it

The creator designed the game, watched play replays and wrote bug lists while Claude Code and Codex wrote nearly all the code. Claude built the first milestones around a goal-line run, and Codex extended the simulation into passing, formations and full games. The creator had the agents update a shared specification so they could hand the project back and forth. They say they spent about a month experimenting with neural networks before moving to a rules-based simulation. A separate track for trying out visual styles eventually produced the Three.js viewer used to watch plays.

From a page on simcfb.com ↗ and their page on GitHub ↗.

The game belongs to @nick050183. Characters and brands it borrows belong to their owners. Image captured by us. Made this game? Here's how we list it.