ClassiCube is a Minecraft Classic-compatible multiplayer game client and launcher written in C. It implements a full voxel game engine: block world storage and rendering, player physics and collision, entity models, inventory, chat, texture packs, lighting (classic heightmap and fancy flood-fill), block physics (liquids, falling blocks, TNT), particles, and the Classic/CPE network protocol. A separate launcher subsystem fetches server lists, handles updates, downloads texture packs, and starts the game. The codebase is organized around an IGameComponent lifecycle (Init/Free/Reset/OnNewMap), a typed event system, and platform abstraction layers (Window_, Platform_, Graphics_, Audio_) that share the same API across dozens of desktop, mobile, web, and console targets ranging from modern Windows/Linux to PS1, Dreamcast, N64, and Amiga.