Update: Call of Madness (previously called Cthulhu: Call of Madness) is live on Kickstarter and the campaign will run for 13 days. You may back for a copy of the game in the language of your choice (English, Polish, German, French).
The solo mode comes with 21 cards and a die but the rules haven't been revealed.
Our preview post below was published on January 8.
Cthulhu: Call of Madness is a 2-4 player card-based tower defense and take that game in which you are priests trying to summon the Great Ancient One. It will launch on Kickstarter on January 12, with a solo mode as the first stretch goal.
You'll have to sacrifice cultists and defeat investigators, but that's about all the information we've got in English right now.