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Red Gel in Action
Red gel uses the default spreading mechanic, spreading along the cardinal directions, only replacing air.
Blue Gel in Action
Blue gel functions similarly to red, except it won’t spread into locations where the sky can be seen.
Green Gel in Action
Green gel spreads the same as red gel, with the addition of also spreading diagonally. This allows it to get through corners created by vines or other complex builds. Be careful not to let it leak outside of your build.
Cyan Gel in Action
Cyan gel acts as a combination of green and blue gel, by both spreading diagonally and avoiding the sky.
Orange Gel in Action
Orange gel behaves the same as red gel, but the distance it spreads is determined by how many you’re holding when you place it, making it handy for builds in open areas.
Yellow Gel in Action
Yellow gel will only spread along the plane that you’re facing when you place it, making it great for sealing off walls, windows, or other holes that the gel would otherwise go through.
Removing Gels
Gel can be removed by using gunpowder on it. Doing this will trigger a chain reaction, removing all connected gels of the same type.
Examples
Here’s an example of how it could be used in a build. If this structure were loaded into the game, the gel inside would be replaced with air, while the air outside would not be placed.