Why not add randomly appearing walls every random number of minutes/seconds just to make the game more challenging? It's too easy to avoid the red dot as is. >_<
It would be nice if there was a score for how long you can run around without being caught by the red dot. And every time that you did get caught, a whole LOT of points would be deducted. ^_^
Please add music to make it more enjoyable! Like for background or when it's Game Over. Actually, that's another idea! You should indicate Game Over when the red dot captures you or something. ^_^
Something chasing the dot!! Like... an enemy dot...? I dunno. Seems boring if there's no point to the dot being able to move around in all directions. >_<