I'll have a look through this a little more at another time. (I've got important tests on Monday and Tuesday).
But here a couple more commands, try them. Maybe one of them will do something. (I haven't set it up so I can't try them.)
savex
savey
dfgfggg
end
game over
sonic
If sam136 cannot manage to intercept http request I may try and create a patched iwbtgg.
P.S.
Gorilla Escape isn't coded in.
Instead you can just modify levels to your hearts content though the commands. Gorilla Escape is:
$$layout,Stage 1-1$stagetext,Gorilla Escape!$pspawn,sprite29,4344,1840$pspawn,sprite29,4376,1840$pspawn,sprite29,4408,1840$pspawn,sprite29,4440,1840$pspawn,sprite29,4440,1808$pspawn,donkeykong,4390,1840$pspawn,donkeykong,4568,1016$pspawn,donkeykong,5280,1472$pspawn,donkeykong,6352,744$
Due to Gamejolts very poor validation system it is actually possible for anyone to control all copies of iwbtgg. For example it is trivial to change everyone's message they get when the game first opens. Or to enable or disable curse mode for everyone. I told Kayin and Gamejolt about this months ago but Gamejolt still hasn't patched this yet. :(
edit:
Here's a random list of stuff I found that looks kind of like a command. Most of it won't be. It doesn't include things which are under 5 letters long.
spawn
savey
savex
point
effectblock
networkold
DonkeyKong
private
default
dfgfggg
skype
batman2
batman3
batman1
pointer
spikeattack
lakitu
angle
baron
overlay
speed
netspeed
gamejolt
skypecall
width
trigger
black
Nangle
spike
music
spawnr
layoutname
store
details
sonic
crash
planer
normal
Default
newline
UserGen
CustomKey
moverhand
preset
pspawn
LayName
spikewall
throw
network
sound
reveal
Donkey
reverse
world
planel
descends
invade
soldier
stagetext
signature
release
barrel
gettoken
scream