This is a replica of the game Terraria, written in JavaScript. It is not yet complete but the basic foundation is solid. The game uses standard 2D platformer controls, WASD. Use the Tab key to show stats. Use Environment.spawnMob(450, 160, "abramsTank"); to spawn a tank. It takes a while to load, but after loading it will run at a steady 60 FPS. It does not run well on Firefox regardless of loading.