To use custom weapons you must first have beaten the game. Then make sure the weapon is with the Jetz fusion exe. NOT IN THE WEAPON EDITING FOLDER. Or if you want to cheat just type destroy and push enter while playing to use custom weapons.

Fireball: A simple little fire ball that has the sound of the mario fire ball and lights people on fire.
creator: Shawn64
Mega Cannon: Bazooka that shoots 5 missiles at the same time. Very cool looking and has a powerful blast sound.
creator: Shawn64
Scatter: Throws normal bullets out in every direction with random speeds. Great for when the cops have you surrounded.
creator: Shawn64
Power Rifle: Each bullet has the power of 10 bullets in one.
creator: Shawn64
Babies: Jetz is one sick bastard
creator: Shawn64
Spit Fire: These fire balls light people on fire. How fun!
creator: Stenners
Grenade Spitter: How could you not love a raid fire grenade launcher. This thing kicks ass!
creator: FWGaming
Billinski: Whoever made this is smoking crack.
creator: FWGaming
Pinchi Pack: Woohoo! Crimax game characters shooting crap out of their selves.
creator: CapnChubby
Spore Launcher: This sprays a nice fire mist that lights everyone on the screen on fire. Looks like it magicaly does it. Very Cool.
creator: Gizmo
Optical Nuke: Woh. You gotta have a fast computer to handle this weapon. But it looks awesome. Shoots a ton of nukes and electricty.
creator: Gizmo
Pixie Dust: Sprays pixie dust down on the people killing them.
creator: Gizmo
Koopa Shooter: Shoots koopsas. You probably could of guessed that... It also hurts people! Probably could of guessed that also...
creator: Gizmo
Silver Bullet: These bullets cut threw almost anything =P
creator: Dragonfire198810
Giga Blaster: Shoots a spray of invisible bombs down onto the city
creator: Dragonfire198810
Uzi: Shoots bullets so fast you cant see them and uhh its an UZI!
creator: Dragonfire198810
Assult Rifle: Shoots about the same speed as the plasma auto rifle but is stronger.
creator: Ryman1026
Assault Rifle: This is one of the coolest custom weapons ive tried. The better assault rifle and I think this one is actually spelled right. haha.
creator: Maikel van Duijl
Nade Launcher: shoots a bunch of explosive bullets. Has alot of destructive power. Lags on my computer though =/.
creator: Maikel van Duijl
Assault Launcher: It's a fast firering grenade launcher with a lot of power but if it's overused it will lag.
creator: Maikel van Duijl
Fire Launcher: It's a weapon based on shawn's Mega Cannon. It fires a bunch of bullets that set peeps on fire :)
creator: Maikel van Duijl
Suicide Bomb:Yes a throwable, killable, dieable bomb.
creator: Ryman1026
Stun Gun: I don't want to test it so it probably just shoots bullets that kill people. Good guess.
creator: Ryman1026