Call of Cthulhu is one of my favourite games, but I keep hearing about the other HPL-inspired game, Trail of Cthulhu... And I'm wondering: is it worth purchasing?

I mean, I already own CoC with a few supplements. Is there anything new Trail of Cthulhu could offer me? Could I ask for some opinions on the game?

In reply to Varsovian (msg # 1):

Call of Cthulhu is probably my favorite game. and I'm fairly familiar with Trail of Cthulhu as well.

ToC is a good game. It shares the Lovecraftian background and aims for the same blend of mystery and horror. Its great conceit is that it makes sure the story doesn't get bogged down or derailed due to missed die rolls. It does this by giving 'core clues' freely, just for having a character in the right place with points in the needed skill. This is a good idea, but most experienced CoC Keepers achieve the same thing with the 'fail forward' concept.

Characters also put a given number of points into skills, which sometimes can be expended to buy upgrades for core clues or are used to match against opponents in contested situations. These get refreshed periodically.

ToC splits the Sanity score into Sanity and Stability with different ways to lose each and different consequences for the losses. It also requires players to select a Drive that motivates the character into investigating the strange occurrences. The player also sets up Pillars of Sanity and Sources of Stability to underpin the Sanity and Stability characteristics.

That's the quick overview.

This is interesting... Anything else you could tell me about the game?

It gets a lot of published support from Pelgrane Press and is also the basic engine they use in a host of other games.

I like the system, but CoC is still my favorite.

IIRC, ToC has a simplified set of rules freely and legitimately available online. If you Google it, you can check out the basics of play.