Crisp and Simple
MOAT has a pleasantly minimalistic appearance with equally simple gameplay. I very much enjoyed the muted color scheme and humorously scuttling "moving objects" -- which I imagined to be lions and birds. The introductory text, like everything else about the interface, is smooth and unobtrusive. The gameplay itself is entertaining enough to warrant several replays.
I found most of the game to be lacking, however, in a few easy-to-improve areas:
The first (and smallest) criticism I have is that the game is, regardless of how deliberate, without music. I appreciated the suggestion to turn on background music, which I gladly did, but I still think that making the 'M' key cycle through a couple tunes could multiply the fun factor a bit.
Second, and more importantly, the game is lacking in variety. Consider adding "birds" that fly up and down, "lions" that change direction and speed, and maybe even a new moving object like a frog that jumps. I also think that the player should wrap around the screen edges like the rest of the moving objects.
Third, and in my opinion most important, is the lack of high-score functionality. I reached the end of the game, which was slightly disappointing to me. Without endless play, a skill-based minigame like this simply cannot maintain much replay value. How can I improve on my level if there is a level cap? If you remove the level cap and add a high-score table, this game can reach its true potential!
I enjoyed the game, but felt the experience lacking. It's definitely worth a few plays, but doesn't have much replay value once you've beaten the game.