CANNOT SLEEP? perhaps a simple game of something will help you to relax.
The classic and first...... "SPACE INVADERS" arrow keys ..left and right tank movement.... space bar fires the tank.
PACMAN....who can forget this little treasure? wot u mean?
Wot u mean???? your not old enough.... LOL
Do remember these games can be addictive, so give youself a time limit.
Good Game, Good Game........ but cannot switch off the sound from above.