Shutokou Battle vs Kaido Battle,
or maybe
Shutokou Battle X Kaido Battle. Aimed for PlayStation devices.
Setting takes place in many countries RTW, good reference of available countries is every supported PSN region (about 60). Depending on availability some countries may not have both a metro highway network or a mountain pass, so they are limited to one environment (Singapore has no mountain roads, Ukraine has no city freeway etc). Image found from GT6 FAQ.
(IMG:
http://www.gran-turismo.com/images/gb-en/support/03_0004234/flaga.gif)
You start a career based on the country you're based in, unless certain conditions are met where you cannot start in your own country (IP address interferes PSN account nationality, offline guest). Players start with local currency of the country they begin with, each balanced to allow the player to purchase their first car. Based on region, the car's specifications are also exact to the models sold in real life (LHD or RHD, size of license plate space for the bumpers (stretched or rectangular), car name (Nissan Silvia or 200SX), like that).
After clearing the first stage you progress by moving to another country. You need to take account the currency exchange and price of moving in. You can also decide whether to leave your car in the country and start with a normal car again, or import it to your next country. After moving, you now have the ability to change regional specs of the car you buy. Unlocking the second stage is done by moving in to your third country, and 100% requires you to move in to all the available countries.
Progress can be also done by traveling to other countries and race as a visitor of the country. This is limited to general opponents and wanderers. Boss battles are only available if you move to the country the boss originates, have made residence and cleared 3 countries in the first stage, or have visited the country more than 5 times. You can choose to import your car, rent a car from an official renter, or borrow a friend's car from your friends (based in that country), or from contacts established by opponents you've met (for offline players). Defeating a general opponent as a visitor will give you half the full progression rate and half the prize money rate, but clearing the gang boss will award you the full rate, excluding money, of all the gang opponents.
You can also create your own crew members who can either drive your cars or bring their own car to the table. Crew members you have can be sent to scatter the roads and parking areas for other players to challenge, each giving rewards for participating against online players, or even winning against the opponent (offline opponents included).
The game uses a hybrid forum system where offline characters and real-world online players can use, similar to the BBS messaging system in the Kaido Battle series, but it has the ability for players to post their own messages. In-game opponents will create and send messages the same way as in Kaido Battle by script. The forums and the rivals list will hint clues for you to complete Wanderer requirements, at least one Wanderer has a requirement hidden under text of the local language of their country as a forum post (slangs and short-form words included to make it harder), this gets online players to cooperate together to translate the messages and find the requirements.