Marbles are off-hand items that come out of the lesser slimy cysts found in The Slime Tube. It takes 2 marbles of one type to combine into the next type. Their selling price is equivalent to the number of green peawee marbles it would take to upgrade to that specific marble.
If you can collect one of each marble, and then use the big bumboozer marble, a marble collector will appear and offer you 32,768 Meat for one of each marble. This will unlock a trophy, if you don't already have it.
They are presented here in the same order they're made when merging in-game.
|green peawee marble||+30 Damage to Stench Spells||1|
|brown crock marble||+35 Damage to Stench Spells||2|
|red China marble||+40 Damage to Hot Spells||4|
|lemonade marble||+45 Damage to Cold Spells||8|
|bumblebee marble||+50 Bonus Spell Damage||16|
|jet bennie marble||+55 Damage to Spooky Spells||32|
|beige clambroth marble||+30 Bonus Spell Damage, +30 Damage to Hot Spells||64|
|steely marble||+65 Damage to Sleaze Spells||N/A|
|beach ball marble||+35 Bonus Spell Damage, +35 Damage to Hot Spells and Cold Spells||N/A|
|black catseye marble||+75 Damage to Spooky Spells||N/A|
|big bumboozer marble||+80 Bonus Spell Damage||N/A|
- All marbles yield useless powder when pulverized.
- Prior to June 2012, the doubling of prices for larger marbles continued for the last four ending at 1024 Meat. Autoselling each marble individually gave about 1/16th the Meat (30,721 less Meat) compared to the marble collector.