TUI Coasters
Killed: Aug 31, 2026
Cause of Death
Completed Fable 5 Experiment Without a Distribution Thesis
Post-Mortem
TUI Coasters produced a substantial Rust terminal park simulator with simulation and management systems, isometric rendering, scenarios, persistence, and extensive headless and snapshot tests. A separate unlisted Three.js browser port extended the same concept, but neither repository established a packaged release, durable distribution path, user adoption, revenue, or a standalone go-to-market thesis. The owner clarified that the fun terminal and browser concepts were built primarily to test Fable 5. The commercial thesis was therefore killed after the experiment fulfilled its purpose, while both repositories remain preserved as companion technical artifacts rather than separate products.
Lessons Learned
Deep implementation work can be valuable model evaluation even when it should not become a maintained product. A companion port broadens technical evidence, but it does not create a second commercial product or substitute for validated users, distribution, and willingness to pay.
What I'd Do Differently
Track the terminal build and browser port as one explicit Fable 5 evaluation from the outset, set completion criteria around simulation quality and cross-platform implementation, and require independent market evidence before admitting either artifact to the commercial portfolio.