I know people say stuff like..
(No tl;dr) "Mak a submarene tht u prss shift 2 go dwn and spac 2 go up n clix 2 fir toorpeedos n jet 2 fir missles frm the bak, lik 10 missles, ill giv persons hwo maks it gets 1000

"
No, Stfu.
How about a more reasonable asking?
Ive been talking to friends about this, a vehicle such as a submarine that has boyancey, that lets it slowly go UP if you don't do anything. as in
Pressing Space goes Down, Not doing anything goes up. Its the opposite then the Pelican Space2goup code. Or like the Magic Carpet and its slowly decendings.
That would be much more reasonable then a bunch of buttons that makes it completely useless and annoying.
And if You really need to, you MAY add something of a weapon for it. Id rather it be weaponless so it could be more of a search sub, or an adventure one.
If you see a way this is possible, discuss.
If You see a way this is impossible, please describe why.