I remember the original.

The sequel is now up on Newgrounds - you can check it out by selecting the 'also by this author' in the bottom left.
A brand new version of the card game The Necronomicon, with a new game mode, and full of new art drawn up by various contributors. There are now 30 ranks to beat, and the game ends when either you get to 30 before your opponent, or they beat you up to rank 30.
Bug fixes, game changes and tweaks, and a whole new game mode called Challenge Mode. Defeat the opponent in a series of scenarios where the odds are stacked against you.
Also includes some rule changes and creatures now have additional abilities.
** NEW - . - MASSIVE update to how the cards are dealt out. Basically what happens now in the fix is that you both have a deck of whatever amount of cards are unlocked, and each card will be seen once by each of you. There will be no duplicate cards appearing until your deck has been exhausted and shuffled, and so the only dups you will see are the cards you held from the previous shuffle. Makes everything much more balanced.
I remember the original.
Cthulhu themed flash. The graphics look good for a card game but there could be more razzle dazzle. Gameplay is just like your typical card game with some different rules. If you added many more cards and had a way to play against other players than this would become Top Notch.
This game was part of my childhood, it deserved an even bigger sequel.
So fun! Wish there was an actual physical card game of this.
Oh man, how could I've missed it and not mark it with big FAVOURITE sign? Love this a lot, remember playing it for hours a few years ago...