A retro themed Helicopter game for mobile (and possibly PC) that combines Choplifter and Crazy Taxi. Players get to tackle a large city where they pick up passengers and try to get them safely to their destinations. Sprinkle in some story missions and an upgrade shop, and you have Helicopteropolis!
A major part of the game is purchasing other garages so you can get further in a run. Here's the hangar for purchase that attaches to the zoo, which (I'm hoping) you'll be able to buy, renovate, and explore :)
In fact, I hope a big part of the game is getting out on foot and exploring the nooks and crannies of the city (for mission unlocks and hidden items).