If you missed Lara Croft and the Guardian of Light when it came out a few years ago for PC and consoles, you can now play it in your Windows or Macintosh web browser. Core Online is offering both free (ad-supported) and paid versions of several games including Guardian of Light, Hitman: Blood Money, and Mini Ninjas (yay!), with Tomb Raider: Underworld and other titles coming soon.
There's no co-op mode in this version, so I'm not sure why the video below shows so much co-op play. Perhaps they plan to add it later. Also, they're clearly still working out some of the kinks. I ran into a couple of minor technical glitches, but once I got the game running, it played beautifully—just like the original version. And you can't argue with the price! ;)
Visit beta.coreonline.com for details. Their help page includes system requirements and troubleshooting tips. For more about the game itself, including my walkthrough and mini-review, visit Stella's Guardian of Light page.