Amerie & Tyresse - 3grhu Adventure Game
We basically made an adventure game where our character would take the player on a journey to different places around the world. Each decision you took would unlock new places but eventually make you end up where you started.
I personally found connecting the different places hard because it took a lot of mistakes and "okay we've got it" to get there but soon after we found out how to make it work.
However, what I did find easy was the speech because we came up with lots of smart, funny things to make the character say.