Obsidian Attack at Steam Alley is a 2 player scenario that uses 1 Swarm of the Marro Master Set, 1 Ticalla Jungle Set, and 1 Volcarren Wasteland Set. It uses a new battlefield called Steam Alley.
Is there a mistake on the building diagrams of Levels 3 & 4? These assemblies should be one hex Northwest of where they are shown, as in the photo, I believe. There should be 3 lava hexes in the row coming up from the Southwest corner, but these two diagrams show only two--which would mean you'd have to put a lava on top of another.
To put it another way, the final assemblies of these two levels are supposed to go directly on top of the Level 2 Lava Field 7 herer!
Yep. My bad. I'll fix it tonight and repost. That 7 hex & 1 hex on level 3 should be moved one up and one to the left. The 5 tiles on level 4 go on the 7 hex in the arrangement shown.
Steam Vents: [COLOR="Red"]After taking a turn, roll the 20-sided die. [/COLOR] If you roll a 1-4, choose a figure on the battlefield that was activated this turn. That figure receives a wound.