For a nearly-work-safe blast from the past: The original Command & Conquer is playable inside your browser, perfect for minimising when your boss walks past.
Shankar reassures gamers that this is a technical proof of concept, and still very much a work in progress. Happily, he’s still working on developing the game further. The to-do list includes pathfinding, improving the AI and adding more levels and units to the game. If you check it out, please take the time to let him know what you think – your feedback will help improve future versions!