Its a fact that Tetris is one of the most addictive games in the world ever, in this version theres one nice feature that you can play the game against other online players. You sign up, so your scores are uploaded to the server too, this makes the game more “addictive” i guess, heres is the link . By the way, its free too!

Play Tetron 2000

Yes, its right! With this program, you can defeat these freaky summer mosquitos
How does this software do that?

When you run this program, it produces a sound in the range of 16000HZ to 20000HZ which is beyond the audible range of the humans. But these mosquitos hear the sound, and looks like they dont seem to like it

Click to download (If the link is broken, you may search Anti Mosquito from google to find it anyway)