Oh man, this is really cool and has amazing potential when you finish the complete version!
I'm really a huge fan of this style of game, much like the old Sierra Online games like Space Quest and Kings Quest etc. I even like the cheesy PC speaker type music, ahh nostalgia! :D
I really would like to see more player involvement instead of just selecting dialogue and playing simple mini-games though. More stuff like searching for certain items, free roam, funny descriptions of your surroundings etc, much like the above mentioned games.
This could be a complete hit if it's done right.
Anyway, I commend you for making a quality alpha version, and I can't wait to see what the end result will be like.
Keep up the amazing work guys!