Unsurmountable: Expansion Collection
Dual Peaks (2 Mountain Cards): Dual Peaks adds 2 Mysterious Statue cards, which count as features when using the difficulty rules. More importantly, mountains now require 2 peaks, which means they also need 2 distinct routes to the top.
Big Climb (6 Mountain Cards): Increase the size of the mountain to a whopping 15 cards, and use the two new features (Flags and Seracs) to aid any climb that uses the optional difficulty rules. And for all the serious mountaineers out there, this expansion can be combined with Dual Peaks; if you can complete a 15-card mega-mountain with 2 peaks, you’ll be on top of the world.
Rescue Mission (3 Rescue Cards): This 3-card expansion adds Rescue cards. One of these is placed midway through the Mountain deck at start to mark the stranded climber. Rescue cards work like Mountain cards, but cannot be discarded for an action and must be included in a successful path up the mountain.
Acclimatization (6 Camp Cards): This 6-card expansion introduces Camp cards. Two of these are dealt at the start of every game and both of these camps must be reached sequentially before the summit. Making camp requires aligning two specific features horizontally adjacent. Players with the Big Climb expansion can even combine it with Acclimatization, drawing three camps instead for a massive multi-stage hike.