I can't recommend the walking dead game enough. I thought it would be a tense scary game, but its actually hilarious.
It's a point and click adventure, but you can also walk around and explore on your own a bit. Things you do change the story, not just for the chapter your playing but also for subsequent chapters - eg, choosing whether or not to go out at night or choosing who to save. You can also choose what to say, I was an abusive asshole and started a fight for the comedy value, I was hated by most characters, one of them even tried to kill me and a few characters insinuated I was a paedophile kidnapper, one or two liked me though.
It took me about 4 hours to play through it, sometimes I was just too vaped to notice obvious stuff though (eg, I spent 20 minutes looking for something I had already found) so you may get through it a bit quicker. You can replay it though and say and do different things for a different outcome to the story.
Theres going to be 5 chapters in total, one will be released each month.