Nintendo has updated its free-to-play game Steel Diver: Sub Wars with version 2.0. Last month, the game’s director Takaya Imamura said to fans that the update would be rolled out shortly and feature a number of tweaks to battle mode. Version 2.0 is currently available to download for free in the Nintendo eShop. Here’s what the update for the free-to-play and premium version consists of:

Premium Version Only

Three additional submarines will become available as players level up their combat record.

10 additional submarines are available for purchase.

Free Version Only

Joining an online match will now require two play coins.

Both versions

Submarine stats have been fine-tuned.

Improved navigation and attack capabilities for normal torpedoes.

New multiplayer stage added named Arctic Circle.

Players can earn bonus points for win streaks in matched skills battles

In matched skills battles, players between levels 30 and 99 will be matched regardless of level difference.

Other players’ levels will not be displayed in Lobby area for random battles.

Attacking allies will cause a warning message to appear and points will be deducted from score.

Other minor adjustments added to overall gameplay to make for more balanced matches.

Nintendo UK has also revealed that the new Blue-Marine submarine will be available for free for those who currently own Steel Diver: Sub Wars premium version, or who buy premium before June 19. However, players with the free version can still own the Blue-Marine when it goes on sale for €0.99 on June 19.