Oji Island is the southern landmass — by far the largest in the game. It was introduced in the 0.7.3 update and has been steadily developed since.
Terrain
Environments range from mountainous forests and rolling green hills to impassable deserts and coastal cliffs. The island is very sparsely populated and offers significantly longer routes than Jeju.
Fuel planning
Oji has only two permanently open gas stations, plus a conditionally open one and two garages in the southern town of Ara whose availability depends on the local Town Bonus. Long runs onto Oji should be planned with fuel and repair stops in mind — running dry on the desert routes is a real risk.
Notable locations
The main town is Gapa (a farming community), with Ara, Gwangjin, Nobong, Dasa, Sanho, Migeum, and Dongsan anchoring drilling, refining, lumber, mining, quarrying and steel industries. The Yeongil Drilling Site on Oji is the only source of crude oil in the game.
Patch history relevant to Oji
0.7.3 — Oji moved slightly north; Ocean Highway reworked; Gapa added as the main town.
0.7.x mid-stream — ring road completed from Dasa to Dongsan.
0.7.17 — Oji North East Ring Road added.
Off-road country
The desert between Nobong and Dongsan is open terrain full of large sand dunes, used by the community for off-roading and rallies.