It looks like it's about 30.87 MB to download, so might take a little longer to load than some other games.
But also it is kind of demanding graphics-wise for a browser game. It runs poorly on both my 12-year-old laptop and computer that has a great CPU but with a passively-cooled GPU. If you see your spaceship the Helix Ark changing direction constantly, I'd recommend finding a computer with better graphics to play it on for the best experience.