First of all I loved the art style for not being so serious, it was a new experience to me, so it made it all seem less intimidating. I soon found myself playing for hours and never wanting to stop. I do confess only having 3 character choices (and no gender options) bugged me a little, but nonetheless I happily played as an Alchemist, with a wolf for a pet. I spent a lot of time fishing too, and I loved loved loved the shape shifting features. When I found out the game had mods for it, it opened a whole new world of fun for me. I was so addicted.
I'd chat with friends as we played separately on each of our computers and be sad that it wasn't a multiplayer game, it always seemed like it'd work wonders on co-op. So it made me wish for Torchlight II in very little time after the first game was launched. I played Torchlight off steam the first time, but I loved the game so much I bought it on steam too even though I had already played it. :) I recently made a giveaway for Torchlight II on steamgifts, but I didn't have enough money to buy a copy for myself as well. I'm dying to play it though!