Matching...
	Previewing moves...
	Tile placement...
	Various Achievements...
	White tile values...

Instead of forcing matches, allow the board to run its course and matches will happen eventually by themselves. Continue matching on the outside and controlling the board and eventually numbers will come together. Additionally, match the low-value tiles at first to remove clutter and increase the value of the tiles still in play.

Drag slowly in a direction to preview what will happen with the tiles. If they are going to merge, the tiles will appear to overlap. If they will simply move, the tiles will slide over. Use this preview to decide if that move is your best. Drag back to your starting location after the preview to avoid actually executing that move.

Place a high-value tile in a corner and surround it with more high-value tiles. This will narrow the directions you have to move everything.

Keep high-value tiles together to make easy matches.

New tiles are placed into rows or columns that just moved. Use this to your advantage by moving the row you want a new tile to appear in. The direction you swipe also matters; the tile will be appended on the "tail" end of the row.

Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Capt. Triad (66 points)	Create a 384 card.
Oh Snap! (199 points)	Play Threes! in Snap Mode!
Sixlock (66 points)	Can you do it with sixes?
Terrence (99 points)	Create a 1536 card.
Threejay (66 points)	Create a 192 card.
Threelock (33 points)	End a game with eight 3s on the board.
Thumbert (3 points)	Create a 6 card.
Torbus (33 points)	Create a 48 card.
Traven (33 points)	Create a 96 card.
Treycee (3 points)	Create a 12 card.
Triferatu (66 points)	Create a 768 card.
Trin (3 points)	Create a 3 card.
Tristine (33 points)	Create a 24 card.
Twelvelock (99 points)	You are Duchess of the Twelves!
Volleo (99 points)	Create a 6144 card.
Whalend (99 points)	Create a 3072 card.

All of the white tiles on the board are added up to generate your total score at the end of a game. The number on the white tile is worth the following number of points:

1: 0 points
2: 0 points
3: 3 points
6: 9 points
12: 27 points
24: 81 points
48: 243 points
96: 729 points
192: 2,187 points
384: 6,561 points
768: 19,683 points
1,536: 59,049 points
3,072: 177,147 points
6,144: 531,441 points