Requirements

Hard Requirements

• HTML5 Canvas API for display
• WebAudio or Moz Audio Data API or Flash Plugin for audio.

Multi-threaded Emulation

• Webworkers for thread creation
• SharedArrayBuffer API for cross thread communication.
• Futex/Atomics API that was written with the SharedArrayBuffer API.

Semi-Hard Requirements

• Typed Array API support.
  • Won't really run well at all if it's not supported.
  • It's shimmed, but has fast paths that are effectively necessary.
• Audio
  • The flash fallback is subpar and doesn't work well on most browsers.

Full Speed Runtime

• Firefox ~38+ & Safari 10.1+
  • With Multithreading
    • 2.4ghz Core 2 Duo
    • 1.2ghz Skylake CPU
  • Without Multithreading
    • 2.8ghz Core 2 Duo
    • 1.4ghz Skylake CPU
• Google Chrome
  • With Multithreading
    • 3.5ghz Core 2 Duo
    • 1.75ghz Skylake CPU
  • Without Multithreading
    • 4 ghz Core 2 Duo
    • 2 ghz Skylake CPU
• MS Edge
  • 5ghz Skylake/Kaby Lake (It's that slow)