This is the list of those elements, which are no longer unlockable in the game. Larger names mean the element is more important for other elements.
Hydrolic Cloud
Hydrolic Energy
Ant War II
3.141258
Ant War III
any war IV
6.282516
any ll
9.423774
12.565032
FULL RAINBOW
ok ant war ll not any war ll
NAME IT HUGE CHAIN
Even Muddier air
rainbow 2
Muddy air
GREAT CHAIN IS HERE
s.txt
Rainbow 8
dammit autocorrect
Turquoise 4
Great chain
how to make an infinite chain
how to make a infinite chain
Purple 4
15.70629
NAME IT GREAT CHAIN
Orange 4
green four
rainbow 3
32 stacks of rainbows
x.txt
yellow 4
Two Machines
Graham's Number * 2
Blue Four
inism x9
5pi
Five pi
Graham's Number * 3
64 stacks of rainbows
Four Machines
ok seriously pls stop mixing the next one wont be anything
-2h
Eight Machines
Rainbow 16
rainbow part 5 red orange yellow green blue light blue
Sixteen Machines
r.txt
Ultrasphere
t.txt
16 stacks of rainbows
NAME IT SUPER CHAIN
Tree Tree Tree 100
oh i know
.A
the end of the universe of desert
hot turbinee *not a typo*
Aquatic 2hw
Grass Atom
cool turbinee
flooooood
Buff Grass connection
Rainbow 32
you spent too much time here
Grass Quark
big bruh
A Bottle Of Ketchup
dundundunddunduundddunnndunnndundunununun
Tefratheism
Tower of Yeetmas
rainbow 4
Inactive Volcano
two stacks of stacks of rainbows
Grass Molecule
Patrol
Aquatic 0
Grass Atomic
Grass Omniverse
0h
This doubling is getting outta hand
10pi
four stacks of rainbows
It cannot stop
Aquatic 1hw
8 stacks of rainbows
A Stack of rainbows
Three Machines
45056
Tower of WTF
It must go on