Also, Osmos is a good game to develop an orbital intuition. Oversimplified but easy to approach. There is a deviously difficult level toward the end where the

Also, Osmos is a good game to develop an orbital intuition. Oversimplified but easy to approach. There is a deviously difficult level toward the end where they give you just enough fuel to compute the level... Unless you keep your delta-V super low, you lose. Like real life.