Windows Games Cheats

Though these tricks seems to be veru silly but anyways you can challenge your friends from doing such tricks like finishing the Solitare game in 10 seconds and making as may points as you want.

Minesweeper
Secret - Reveal Mines
Instructions - Minimize or close all running applications. Launch Minesweeper, then type xyzzy. Next hold down either shift key for one second. Now when you move the mouse cursor over a Minesweeper square you will see a tiny white pixel in the top left corner of your desktop screen. This pixel will change to black when your mouse moves over a mine. You may need to change you desktop background to a solid color other then white or black to see the pixel.

Pinball
Secret - Extra BallsInstructions - Type 1max at the start of a new ball to get extra balls.
Secret - Gravity WellInstructions - Type gmax at the start of a new game to activate the Gravity Well.
Secret - Instant PromotionInstructions - Type rmax at the start of a new game to go up in ranks.
Secret - Skill ShotInstructions - Launch the ball partially up the chute past the third yellow light bar so it falls back down to get 75,000 points. There are six yellow light bars that are worth a varying amount of points:
First: 15,000 pointsSecond: 30,000 pointsThird: 75,000 pointsFourth: 30,000 pointsFifth: 15,000 pointsSixth: 7,500 points
Secret - Test ModeInstructions - Type hidden test at the start of a new ball to activate Test Mode. No notification will be given that this is activated but you can now left-click the mouse button and drag the ball around.
Secret - Unlimited BallsInstructions - Type bmax at the start of a new ball. No notification will be given that this is activated but when a ball is lost a new ball will appear from the yellow wormhole indefinitely. Once this is activated you will be unable to activate other secrets without restarting

FreeCell
Secret - Instant WinInstructions - Hold down Ctrl + Shift + F10 during game play. Then you will be asked if you want to Abort, Retry or Ignore. Choose Abort, then move any card to instantly win.
Secret - Hidden Game ModesInstructions - In the "Game" menu choose "Select Game". Enter -1 or -2 to activate the hidden game modes.

Solitaire
Secret - Instant Win
Instructions - Press Alt + Shift + 2 during game play to instantly win.
Secret - Draw single cards in a Draw Three game
Instructions - Hold down CTRL + ALT + SHIFT while drawing a new card. Instead of drawing three cards you will only draw one.
Infinite Points
In the Windows XP version of solitaire, draw from the deck at least twice. Hold control and drag a card down from the deck. Click the "A" key and then let go of the left mouse key. You will get 10 points for this. Continue doing this for infinite points!
Infinite points trick II
To do this trick, finish a game of solitaire with the time bonus option on. The cards will start bouncing. Click on the solitaire screen and the play again box will pop up. Select no, so the solitaire screen is just blank green. Use the instant win cheat (Alt+Shift+2) and you will recieve the time bonus you got last game will be added to your last game's score. For example, if your time bonus was 5000, and your final score was 6000, after using this glitch, you will have a score of 11000. This glitch can be used as many times as you want.

//-----------------------------------------------------------------// registry hack which will allow you to see your opponents' cards//----------------------------------------------------------------- Launch REGEDIT.EXE and navigate to HKEY_CURRENT_USER Software Microsoft Windows CurrentVersion Applets Hearts. NOTE: You may have to create the Hearts key under Applets In the right-hand pane, create a new String Value. Immediately rename it to "ZB" (without the quotes); give it a value of "42" (again, sans quotes). The next time you're in a game of Hearts, press CTRL + SHIFT + ALT + F12.
Source:Wehackers