Reverse Engineering SimTower (phulin.me)

In a groundbreaking project, a developer has successfully reverse-engineered the classic video game SimTower using large language models (LLMs) to create a modern clone called towers.world. This collaborative online version of the game resurrects the classic experience, allowing players to manage an elevator system in a growing tower while accommodating the behaviors of simulated inhabitants. The endeavor highlights the challenges and capabilities of using AI to interpret complex binary code, reflecting both the promise and limitations of current AI technologies in handling sophisticated programming tasks. The project utilized a reverse-engineering framework named reaper, which connects to Ghidra for static analysis, but faced significant hurdles in accurately defining the game's intricate mechanics. The initial static analysis failed to yield a workable specification due to the complexity of the game's internal state management. The breakthrough came when the project incorporated dynamic analysis through an emulator using the Unicorn framework, allowing the AI to engage with the original game’s state and fix discrepancies autonomously. This approach underscored a crucial finding: LLMs perform better when engaged in iterative verification processes, suggesting that future AI applications in software engineering may need similar closed-loop systems for effective problem-solving. The result is a testament to LLMs' evolving capabilities, and positions them as powerful tools for modernizing legacy software.