RollerCoaster Tycoon: Loopy Landscapes Cheats

When a guest is about to walk into your park, pause the game. Make the price
of the park exactly one dollar less than what the guest is carrying. They'll
always come in, no matter what. If it's the exact amount they have,
sometimes they don't come in.

If your grass is really getting out of hand, just choose the land leveller. Click once on the plot of grass and the tall weed will disappear. You can increase the size of the land leveller to clear the grass more quickly. It still won't be freshly cut, but guests won't complain about uncut grass. Plus, it's totally free compared to the handymen.

In order to unlock Mega Park as an extra scenario, beat all the scenarios in RollerCoaster Tycoon (Original) section.