Immersion Pack - Spain
After accidentally purchasing a DLC I already had, WinGameStore allowed me to refund my purchase within literally minutes after sending in a ticket, so I'm really thankful for that. With that money, I used it to buy this DLC (or rather, a simple immersion pack) instead.
I personally believe Mission Trees should be free content, so that is where I disagree with these immersion packs. With that being said, Paradox allows you to pick and choose which immersion packs you want, without feeling as if you're missing out on content.
Even if you don't plan on playing any of the nations on and near the Iberian Peninsula, the Pirate Republic & Colonization mechanics may make it worth it-if you can get this immersion pack while it's on sale.