@Torkster You're still playing the game because it stimulates the idea of a 'simple sense of achievement' the game easily becomes addictive purely because you can easily see your progress, you don't have a limitation, the numbers continue to go up no matter what. Effectively, you know that if you invest time, you are assured to make progress, thus you continue to invest the time.
Oil platform manager doesn't actually cost the listed price, it says it costs $10,000,000,000, but you actually need an extra 0 ($100,000,000,000), to buy it. Or at least, that is an issue I am having.