OpenTTD Suggestions • Re: Scenario Editor river placement flood fill tool

The Ctrl click is a big improvement for placing rivers, however it is still tedious when drawing out a river even if one tile is invalid no rivers are placed and an error message is shown, instead it should have the valid tiles to have rivers placed on them. Much like the level land tool will still try and level as much of the selection as can be edited, despite there being buildings or other objects. Even better would be a flood fill and all connected tiles on the same level be made river so it would be easier to fill lake basins from heightmaps.

If you create the elevation map so that wider rivers and lakes are also at sea level, you won't have a problem. However, as soon as you want to create lakes and rivers above sea level, you will of course have to draw them in manually.

Statistics: Posted by Timeflyer — 28 Feb 2026 09:42