Global warming scenario
Please add this amazing unofficial scenario Global Warming to the base game. Rules and necessary cards: https://static1.squarespace.com/static/5c179ea9a2772c041db0e4ad/t/5c1e9a75aa4a99bcaeac2db2/1545509507515/Catan+-+Global+Warming+Expansion.pdf
Which includes for example changing off the tiles numbers or desertification depending on the greenhouse gas level, green cities and more ...