The blue and green characters in the game Portal are robbers who decided to rob the largest emerald vault on the planet. Naturally, the stones are strictly guarded, but the thieves know how to do something and are sure of success if you help them. It is necessary to jump over guards and use portals to move from one level to another or change the location on the level itself. There will be spikes and dangerous bugs on the way of the heroes, all this can be jumped over, choosing the right moment. In doing so, do not forget to collect emeralds, since this is precisely the goal of two desperate robbers in Portal.