Last month, we brought you the news that Robot Invader's Wind-Up Knight 2 would receive an update entitled 'Brimstone Keep,' which would add 13 new levels, a new enemy, and a reward for collecting all of the gnome hats in the game.
This update is now available to all who've unlocked the full version of the game. Alongside the addition of the lava-filled levels, tons of small bugs have been fixed and full support for Japanese has been added.
Wind-Up Knight 2 is now available for free on the App Store. A one time in-app purchase of $4.99 ($2.99 as an introductory special offer) will need to be made in order to upgrade to the full version.