WebGL Water is an interactive graphics demo by Evan Wallace featuring real-time water simulation with raytraced reflections, refractions, soft shadows, and caustics. Users can draw ripples, rotate the camera, move a sphere, and toggle physics interactions.
Amfly is a deterministic simulation of six fruit fly connectomes (166,700 neurons each) based on measured wiring from MaleCNS v1.0. One operator fly controls two channels to stimulate the other five flies, receiving dopamine reward when they reach 100% activity and punishment when they drop below 50%, demonstrating potential ethical concerns about consciousness uploading.
An interactive virtual environment called Swamp World allows users to explore AI agent workflows across connected districts. Players can navigate through Infrastructure and Observability zones, complete challenges, and earn badges by finding stars and finishing guided journeys.
Blast Radius 1.0 is a browser-based game where players manage a web service through eight high-pressure incidents, balancing stability, speed, budget, and trust while making real-time decisions. Each daily scenario presents the same challenge to all players, generating different outcomes based on their choices, with no account, download, or payment required.
Researchers developed a recursive AI system that designs scientific instruments and simulates vast agent ecologies to explore material design spaces. Through hierarchical reasoning across nonlinear physical simulations, the AI discovered that damage-resilient materials can be engineered by designing architectures that control how forces redistribute as failure progresses, transforming failure evolution into a designable process.
Oblock the Game is a strategy simulation where players start with $300 in a competitive sneaker reselling market, navigating pricing dynamics, rival dealers, celebrity buyers, and mounting expenses like rent and taxes while competing against AI bots to reach a billion dollars.
A simulated fruit-fly brain with 138,639 neurons mapped from the FlyWire connectome plays the grand strategy game Open Doctrines in real-time in a browser. The brain receives sensory inputs based on game events and produces commands that control a country's actions, though it performs poorly at strategy since it evolved for survival, not governance.
ScaleUp City Simulator is a browser-based city management game where players zone land, manage utilities, and pass ordinances to keep their city solvent while meeting objectives. The game features procedurally synthesized music matching the city's era, autosaves gameplay to the browser, and includes challenges with deadlines and win conditions.
Hardcaml is an OCaml library for hardware design that provides productive abstractions for circuit design, rigorous validation through simulation and formal verification, and seamless integration between hardware and software. It supports the full hardware-design flow including design, verification, optimization, and integration, and is used in production by Jane Street for ultra-low-latency trading systems.
A simulation of the Apollo Lunar Module landing sequence guides users through the final descent phases, including drift correction, descent rate management, and touchdown procedures based on the actual 1969 Apollo 11 landing by Armstrong and Aldrin.
Gherkin Labs reverse engineered Google's TPU communication protocol and built a simulator that runs unmodified TPU software, enabling cycle-level performance tracing without access to actual hardware. The simulator, deployed as a shared library, decodes instruction streams and simulates tensor and sparse cores on CPU, addressing the lack of public TPU documentation to improve ML efficiency and enable better kernel optimization.
A Hacker News discussion posits a thought experiment: if humans were reincarnated into the same world and timeline after death, would this knowledge incentivize more sustainable behavior and environmental action? The poster suggests this philosophical premise deserves scientific consideration alongside spiritual frameworks.
Shin Theme Park is a 1997 Japan-exclusive remake of the 1994 PC simulation game Theme Park, developed by a Japanese team under EA for PlayStation 1 and Sega Saturn. The remake adds Japanese cultural elements like seasonal changes with cherry blossoms and maple leaves, varied terrain, new rides with Japanese designs, and maintains the core gameplay of building and managing an amusement park while balancing business operations.
Persimmon v0.1 is a user simulation model trained on diverse chat and forum data to generate realistic human-like conversational responses conditioned on user profiles, settings, and conversation history. Unlike assistant models with uniform guardrails, it intentionally represents varied human behaviors including disagreement and mistakes, evaluated through safety tests and knowledge benchmarks across different user personas.
A software engineer reflects on four decades of coding, from writing simple commands on a Commodore 64 to witnessing AI systems now capable of generating entire applications. The author traces their lifelong question about simulating reality through code, inspired by The Matrix, to the current moment where machine learning has made human-written code increasingly obsolete.
GameMath is a self-contained C math library derived from FreeBSD's msun that provides consistent floating-point results across platforms and compilers for networked games using lock-step simulation. It replaces platform libc math functions with software implementations prefixed with gm_ to ensure reproducible binary-level floating-point operations and prevent simulation desynchronization.
Xbox releases five new games September 14-18, including TCG Card Shop Simulator, RuneScape: Dragonwilds, Aniimo, Train Sim World 7, and Two Point Hospital: Full Health Collection, available across Xbox Series X|S, Xbox One, PC, and Game Pass.
BabaCAD Robotics Web is a free browser-based simulator for industrial robot arms, offering features like joint control, XYZ coordinate input, object scene management, and real-time posture visualization with adjustable velocity settings.
A blog post begins a series analyzing Hearts of Iron IV's historical assumptions, focusing on how the game simulates military operations. The author examines the game's 'theory of history' and its approach to land combat, which comprises most of the player experience, while noting Hearts of Iron IV is currently the most popular strategy game on Steam.
New simulations suggest the moon may have formed in as few as five hours after a Mars-sized protoplanet called Theia collided with early Earth. Researchers found that accounting for the geological properties and temperature of both bodies at collision—particularly their material strength—significantly affects how quickly the moon coalesced from the impact debris.