Some games will require you to relaunch them before the item will be downloaded. This item has been added to your Subscriptions. Subscribe to download Hearts of Augmentation. See all 88 collections some may be hidden. This item has been added to your Favorites. Description Discussions Comments Change Notes. Description Discussions 5 Comments Change Notes. This item will only be visible in searches to you, your friends, and admins. This item will only be visible to you, admins, and anyone marked as a creator. Please see the instructions page for reasons why this item might not work within Hearts of Iron IV. This item is incompatible with Hearts of Iron IV. Byzantium Revival mod for Hearts of Iron IV If you believe your item has been removed by mistake, please contact Steam Support. Home Discussions Workshop Market Broadcasts.