You don't have to remember it, and you can't research the same object twice anyway. It is stored in the Manufacturing Bay: click on the "Components" button in the left panel (bottom). However you can also craft an item that you have researched before directly where you need it (in the Upgrades from the Manufacturing Bay)
my duck doesn't climb well under pressure. if my duck climbed in races like he did in training he would dominate...it's just a straight wall in the race too!
So your telling me if me an d my teammate unknowingly attack the same place one gets there first so the other attacks their ally...therefore making us enemies. I was unaware of this until my teammate (well enemy now) came rampaging through England destroying me from behind. Fantastic...
when you kill the final boss don't switch to yellow and turn invisible to be safe. it glitches the ending and freezes. and you don't get the badge. soooo i guess i'll be fighting the final boss again.
reading others comments has made me realize how much i suck at this game. it happened something like this. "you mean it goes past 4 mini games at a time!?!"
We will build this castle of pure steel and store our dynamite at critical structural points of the castle then just not guard the dynamite. What could go wrong?
 "Glean 2"){kind=icon}
 "Super Duck Punch!"){kind=icon}
 "Innkeeper"){kind=icon}
 "DuckLife 4"){kind=icon}
 "Theme Hotel"){kind=icon}
 "Mushroom Madness 3"){kind=icon}
 "Earn to Die"){kind=icon}
 "Sticky Ninja Academy"){kind=icon}
 "WarLight"){kind=icon}
 "Red"){kind=icon}
 "Primary"){kind=icon}
 "Help Papa Rob!"){kind=icon}
 "Multitask 2"){kind=icon}
 "Bubble Invaders"){kind=icon}
 "Flintstones Match Up"){kind=icon}
 "Sieger: Level Pack"){kind=icon}
 "Doodle God 2"){kind=icon}
 "DuckLife3: Evolution"){kind=icon}
You don't have to remember it, and you can't research the same object twice anyway. It is stored in the Manufacturing Bay: click on the "Components" button in the left panel (bottom). However you can also craft an item that you have researched before directly where you need it (in the Upgrades from the Manufacturing Bay)