I think you should make a simulator of truck driving for mobile devices, but what frustrates in analogues is controls. For the mobile version is enough acceleration, brakes and moving between the lines.
Add an element of racing and exploring the open world, improving the driver's skills, buying licenses for different truck classes and you will make free-to-play online game.
Here's how I see this game (Vision):
Truck classes age different. Player must gain enough experience to drive different truck classes. More experience (player level) – more classes he can drive. At the start of the game player can drive only trucks from basic class.
Player can buy a license for earned experience AND money.
- Basic class
- Long trucks
- Dangerous cargo trucks
- Oversize cargo trucks
- Road trains
The truck can be supplemented with additional equipment or improved with other details. As well as you can buy another truck better, but more expensive.
- engine - power, efficiency
- gasoline tank
- color \ drawings of truck and trailer
- wheel chains
Goal of the game:
Open all locations on the map
Get all driving licenses, drive different trucks
Participate and win in all races (achievements)
Online-time enough for normal progress: 2 – 3 hrs/day.
Online game time limitation - driver fatigue, vehicle wear (could be increased by driver skills).
Sell goods and services:
- Premium account - get 150% driving experience
- Game money
- Premium trucks
- Unique colors, decals for the truck and trailer
What do you think?