;) We've been an independent dev studio (Radon Labs) before being bought by Bigpoint, and the only way to survive was to support a wide range of platforms (we weren't big or successful enough to have the luxury to pick our target platforms). So our engine basically scaled from the NintendoDS to PCs. Being able today to just cross-compile our engine to JS+WebGL or mobile platforms(between 150k and 500k of C++ code, depending what modules you link) is very nice. Plus, for browser games, Flash and plugins as a whole are on the way out, so we need a solution to bring our games into the browser without plugins. A solution like emscripten or duetto to compile C++ (or maybe later other languages) to JS with a relatively small (and predictable!) performance hit is definitely "good enough" for us.