Killzone: Mercenary has received a massive day one patch, updating the game to version v1.01, but only mentioning “stability fixes and performance optimisations”. The patch is 1190 MB in size, increasing the game’s size on the memory card from 3.3 GB to over 4.5 GB, and taking up valuable space.
Even if you purchased the physical version of the game, the patch will still take up 1.2 GB of space on your memory card. It’s likely that the patch fixes more than just bugs, with a download that large. Could Guerrilla Games be sneaking additional content into the game – perhaps upcoming DLC content.