It would have the same 2.5D environment and probably the fast-paced action of DOOM, but of course, keeping the bright, colorful, comedic, and overall "kiddy" style and elements of Commander Keen. I'd want to keep it true to the original games by giving him only one hit point to die, and to make up for this weakness the enemies would be way easier to avoid and kill. He's shorter than the doomguy, but he will jump much higher and there will be much less air resistance, making for some great platforming possibilities that is seldom seen in an FPS. (He should also get the pogo-stick, of course, and I bet I can figure a way to modify the key configurations to use it
)This is Billy as he would appear in the game:
I've been thinking about either remaking episode 1 (Marooned on Mars) or going with an original story for the game. What I have so far for a new episode is this:
Working diligently in his backyard, Billy Blaze has reconfigured the Bean-With-Bacon-Megarocket to not only travel through space much faster, but also travel through time and other universes as well! So Billy tests out his modifications by taking it for a test drive to another universe. It was a complete success, but just as Billy was about to make an interstellar hyperjump back to his own universe, the warning siren went off, and all the ship's controls went dead. The Megarocket was being pulled to a nearby planet, unable to push out of it's gravity field.
The Megarocket had a crash landing, and as Billy stepped out of the remains of his rocket, he saw a sign in SGA that read "WELCOME TO GLOOGULUS PRIME"
"That's odd..."
Keen thought, as he pondered how a planet in another galaxy, and even another universe, would know the Standard Galactic Alphabet of his home Galaxy. He asked a nearby green, four-eyed and six-limbed alien if he knew anybody who could help repair his ship, and he just happened to be friendly enough to help."Traveling to alternate universes? There is only one being on this planet that could help you with that, but talking to him is awful risky..."
"Who?!" Keen demanded. The alien looked at the ground, twidled it's four thumbs and stuttered until it finally came out.
"The Great Gloogageddon. It is the overlord of our planet with awesome power as well as ancient and near-infinite knowledge who is the allfather of the beings known as the Gloogs.
"So what's so hard about asking him for help?" Keen asked.
"Well, right now it is in a deep, eternal sleep, and can only be awakened by uniting the eight Gloogstones at the Altar of Gloog. The gloogstones are spread throughout the world, and just retrieving them is dangerous enough, but upon awakening, the Gloogageddon will demand a battle to judge if you are worthy of an audience with him."
"I've done dangerous stuff before," Keen said. "This should be a piece of cake! So what are these 'gloog' thingys. Are they like you?"
"No." Said the alien. "I am but a Kleep. The gloogs are the most dangerous predators of my species. You'll know them when you see them..."
"Okay, thanks for the info. Well, I gotta go. See ya later!" And so Billy dashed off without a second thought, and before he was out of sight, the Kleep yelled to him, "Watch out for Glooglets, Glooginators, Gloogzillas, Tickle Monsters, and Big City Gloogs out there!"
And so Billy Blaze, AKA Commander Keen, began his quest for the Gloogstones.
The rest of the story is plot spoilers, of course
I think I'm going with the title "Commander Keen and the Secret of Gloogululs" or KEENGLOOG for short. I won't be getting to work on this right away, but it's an idea anyway. You think it's cool?
You crack me up little buddy!
(Though much of it isn't that good)
)
Not all of them may get used though, and I'm thinking about a swimming animation, but I don't think anybody cares enough what he looks like underwater 
