Hi Kiniki, (i'm a little late in saying this)
But Welcome to A.O. Once you have an Amiga you never want to go back. Its very addictive :-D
For playing games you won't need to update too much on the 1200 as it was built just for that purpouse a hard drive and eccelorator for starters is all you will need and you will have an awesome machine.
Have fun :-P