[LEVEL 1: ADJUSTABLE TERRAIN]

• Left Click a Height Marker to select it and adjust its properties with the buttons that show up.
• Hold Left Click on a Height Marker to move it around with the Mouse.
• Left Click the [eye] button to hide or show all the UI.
• Left Click the [dice] button to reroll/randomize all of the existing Height Markers' properties.
• Left Click the [+] button to add a new Height Marker.
• Left Click the [-] button to remove a selected Height Marker.
• Left Click the [x] button to deselect Height Markers and hide the property adjustment buttons.

I want to mention that this is similar in principle to TinkerSmith's "Plasma Demo", so go check that out if you want a different (and more mathematically advanced) take on this idea (https://flowlab.io/game/play/1768131)

[LEVEL 2: RANDOMLY GENERATED ELEVATION MAP]

• Use WSAD to move the camera viewport.
• Use the Up & Down Arrows to zoom in or out.
• Use Space to spawn water particles at the Mouse coordinates.