I have started working on a new game mode. Survival Mode starts with an empty board and tiles will fall every second. The game ends when the board is full, and the goal is to survive as long as possible. At each level the tiles will fall faster, and words will be worth more points.
Here is a simple screen shot. The UI doesn’t change much, there is no more timer bar and the combo bar is modified. The combo bar is replaced with a level bar which shows the current level and your progress on that level.