Grand Theft Auto: The Trilogy Cheats

Using a jetpack, fly to the top of the Gant Bridge's southern strut. On the top level, there is a message on a wall that reads 'There are no Easter Eggs here. Go away.'

Go to Staunton Island. Head for Bedford Point, and bring a tall vehicle with you, like an Ambulance. Go to the parking lot that is behind some buildings in the projects (it was used in the “Kingdom Come” mission you do for King Courtney). Park your Ambulance next to the wall where the Kuruma is parked. Climb up on top of the ambulance and jump over the wall. On the other side, you’ll see a sign that says “You werent supposed to be able to get here you know”. When you’re ready to exit this area, use the ramp that the programmers (very thoughtfully) put there for you.

In the Downtown section of Vice City's west island, the VCN building can be entered from ground level. From the roof of this building, if you jump from the far eastern corner of the helipad into the window of the adjacent shyscraper via a substanceless wall texture. Inside this hollow you will find an actual Easter Egg, with the words 'Happy Easter' written on it.

While at night, get a sniper rifle, then shoot the moon to change its size.

A pool on Starfish Island has a beach ball. To play the game, run into the ball and it will fly into the air. Stand underneath the ball's shadow as it falls to knock it back in the air, each time gaining a point. In the stats page of the game, a new statistic will appear: "Highest Score On Beach Ball Mini Game."