Fallout 1 or fallout 2

How about start with 1 then go on..

Reserved for bumps

How about both.

1 then 2... then maybe tactics though its not that reach. They are really outdated though, graphics and ui deter a lot of people.

Fallout 2 is still the best game in series. So I would go with that.

Start with 1, though 2 is far superior.

Intro of 2 spoils the ending of 1. Play them in order.
EDIT: why are people voting for skipping to 4? :|

Fallout 1 and Fallout 2. There's no OR or any reason why you should start with the second one instead of the the very first one.

read the plot of the 1 in the internet, then play the Fallout 2

If you have to choose just one choose 2, far better in my opinion. Or wait for a sale and buy the Classic pack

start with 1 and then 2. Second is much better, so first is not so playable after marvellous 2.