The Oil Blue is an indie action sim set in the near future where you explore the world's oceans in search of oil, landing on abandoned refinery islands and reclaiming them under the watchful eyes of a major energy company. Once you land on an island, you have a set amount of days and oil production targets to hit during your stay. Fire up those old drilling machines and start making oil underwater, watch the oil barrel market and sell at the highest price, repair machines and do it all within the time you’re given…or your employer, the United Oil of Oceania corp., will boot you off the island for a better crew. Sell more barrels to achieve higher ranks and perks, upgrade your machines, and conquer the ocean! See why About.com calls it "...a rich and rewarding experience that’s really unlike any game out there." and JayisGames.com says, "The Oil Blue looks great, plays great, and will suck you in for hours at a time."
There is a genre for games like this, though I'm not sure what to call it. Juggling perhaps? It's a game where you have to operate a bunch of different machines simultaneously. The player is like a rope in a game of tug of war, constantly being pulled in opposite directions, in this case by blinking lights and sirens instead of kids and their overenthusiastic parents.
The learning curve is a bit fast, but I suppose if you fail your first objective (collect 15 barrels of oil in 3 days), you can always try it again, having learned from your failures. After a few rounds, it starts to make sense, and it's actually quite a fun game!
Whether or not you have any interest in drilling for oil, I recommend giving this game a try.