I wrote this game as sort of a self test, to see if i could do it. And i did

You move using the numpad, so 8 directions. And you place blocks by pressing their corresponding key followed by a direction on the numpad, so W then 6 would place a "wall" block to the right of the player
Heres a screenshot:

And a link to the game: http://www.mediafire.com/?f2xouze2o2aqpr7
NOTE: It is still rather buggy, especially when you try to place blocks really fast. and if blocks arent placing and your only moving once per every 2 keypresses just start spamming directions and q, it will fix itself
