Gels: Difference between revisions

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=== Slime ===

'''Slime''' or '''Sewage''' was found only in ''[[Portal]]'' during [[Chell]]'s escape~~, and is~~ not ~~often considered~~ a gel ~~due to the fact it has no emitter, is not used to solve chambers, and Chell cannot "paint" with it like with the official gels introduced in ''Portal 2''. Regardless~~, it does have some properties similar to ~~some~~ gels in ''Portal 2'', such as the slippery effect of running on Propulsion Gel and an adhesion effect that keeps Chell somewhat stuck on the surface.

'''Slime''' or '''Sewage''' was found only in ''[[Portal]]'' during [[Chell]]'s escape. While not technically a gel, it does have some properties similar to gels in ''Portal 2'', such as the slippery effect of running on Propulsion Gel and an adhesion effect that keeps Chell somewhat stuck on the surface. It has no emitter, is not used to solve chambers, and it cannot be "painted" onto surfaces like the gels introduced in ''Portal 2''.

== Unused gels ==

== Unused/cut gels ==

=== Adhesion Gel ===

~~The purple "sticky" or "adhesion"~~ gel was ~~found~~ on ~~accident in the Portal 2 authoring tools. It turns out that the purple gel was initially going~~ to ~~behave like~~ the blue ~~stick~~ paint in Tag: The Power of Paint, ~~the game off of~~ which Portal 2's gel mechanics are based. The ~~adhesion~~ gel ~~would have been~~ in the game ~~along with the repulsion, propulsion, and conversion gels in Portal 2 now~~. ~~But some~~ play testers ~~got too disoriented when they had~~ to think with portals while walking on walls and ceilings, ~~so Valve ended up removing the~~ gel ~~before it~~ was ~~completed~~.

Adhesion Gel is a cut gel which was originally meant to allow the player to walk on walls, similarly to the blue Stick paint in ''Tag: The Power of Paint'', which Portal 2's gel mechanics are based on. The gel was made purple as a placeholder; it was cut before the developers decided on a final color, so it remains purple in the final game. The gel was cut because many play testers experienced motion sickness and disorientation, having to think with portals while walking on walls and ceilings. Most of the gel's effects were removed in the final game, except one: cubes coated in Propulsion Gel will not slide across Adhesion Gel-coated floors, and vice-versa.

The gel was replaced by Reflection Gel in the Peer Review update.

=== Reflection Gel ===

~~The~~ Reflection Gel replaced the [[~~Adhesion Gel~~]] ~~in the authoring tools after Portal 2 major update of their first~~ DLC. ~~The gel uses~~ the Conversion Gel ~~texture~~ when ~~hits the floors~~, and ~~causes~~ the [[Thermal Discouragement Beam]] to reflect, similar to the [[Discouragement Redirection Cube]]. ~~When this gel hits the player it shows the screen~~ effect of ~~the [[~~Propulsion Gel]].

Reflection Gel replaced Adhesion Gel in the [[Peer Review]] DLC. It appears the same color as Conversion Gel when painted on surfaces, and the color of Propulsion Gel when splatted on the screen. The [[Thermal Discouragement Beam]] will reflect off of it like a mirror, similar to the [[Discouragement Redirection Cube]]. It also retains Adhesion Gel's effect of counteracting Propulsion Gel.

== Related achievements ==

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 {{Clr}}
 === Slime ===
-'''Slime''' or '''Sewage''' was found only in ''[[Portal]]'' during [[Chell]]'s escape, and is not often considered a gel due to the fact it has no emitter, is not used to solve chambers, and Chell cannot "paint" with it like with the official gels introduced in ''Portal 2''. Regardless, it does have some properties similar to some gels in ''Portal 2'', such as the slippery effect of running on Propulsion Gel and an adhesion effect that keeps Chell somewhat stuck on the surface.
+'''Slime''' or '''Sewage''' was found only in ''[[Portal]]'' during [[Chell]]'s escape. While not technically a gel, it does have some properties similar to gels in ''Portal 2'', such as the slippery effect of running on Propulsion Gel and an adhesion effect that keeps Chell somewhat stuck on the surface. It has no emitter, is not used to solve chambers, and it cannot be "painted" onto surfaces like the gels introduced in ''Portal 2''.
-== Unused gels ==
+== Unused/cut gels ==
 === Adhesion Gel ===
 {{main|Adhesion Gel}}
-The purple "sticky" or "adhesion" gel was found on accident in the Portal 2 authoring tools. It turns out that the purple gel was initially going to behave like the blue stick paint in Tag: The Power of Paint, the game off of which Portal 2's gel mechanics are based. The adhesion gel would have been in the game along with the repulsion, propulsion, and conversion gels in Portal 2 now. But some play testers got too disoriented when they had to think with portals while walking on walls and ceilings, so Valve ended up removing the gel before it was completed.
+Adhesion Gel is a cut gel which was originally meant to allow the player to walk on walls, similarly to the blue Stick paint in ''Tag: The Power of Paint'', which Portal 2's gel mechanics are based on. The gel was made purple as a placeholder; it was cut before the developers decided on a final color, so it remains purple in the final game. The gel was cut because many play testers experienced motion sickness and disorientation, having to think with portals while walking on walls and ceilings. Most of the gel's effects were removed in the final game, except one: cubes coated in Propulsion Gel will not slide across Adhesion Gel-coated floors, and vice-versa.
+The gel was replaced by Reflection Gel in the Peer Review update.
 === Reflection Gel ===
 {{main|Reflection Gel}}
-The Reflection Gel replaced the [[Adhesion Gel]] in the authoring tools after Portal 2 major update of their first DLC. The gel uses the Conversion Gel texture when hits the floors, and causes the [[Thermal Discouragement Beam]] to reflect, similar to the [[Discouragement Redirection Cube]]. When this gel hits the player it shows the screen effect of  the [[Propulsion Gel]].
+Reflection Gel replaced Adhesion Gel in the [[Peer Review]] DLC. It appears the same color as Conversion Gel when painted on surfaces, and the color of Propulsion Gel when splatted on the screen. The [[Thermal Discouragement Beam]] will reflect off of it like a mirror, similar to the [[Discouragement Redirection Cube]]. It also retains Adhesion Gel's effect of counteracting Propulsion Gel.
 == Related achievements ==