Peggle Extreme was a trial edition introduced by the popular game running software Steam, and was based on the half life series of games along with other valve games: team fortress 2, and portal. This only had 8 playable levels, only one playable character, and was therefore very limited, although the maps, being themed on valve ganes, didn't make it into the full first game explained below:
Peggle Deluxe was the first full peggle game to be released with over 50 playable levels and 10 unlockable characters. It also had a storyline in a way that you could enter adventure mode where you unlocked characters and levels. It had over 100 challenge levels to go through and had a versus mode where you could play against a computer or a friend.
Peggle Nights is the second and most recent installment of the peggle series. It featured the new character, marina and a new set of levels and challenges. It had all the features of peggle deluxe and also the aced score award where you got an ammount of points over a fixed value for each level. It also had a secret minigame where you have to click on the glowing light balls on the screen in pic 4 and score fairy points. This shows on the character stat screen.
Peggle Deluxe can be downloaded here
And Peggle Nights can be downloaded here