quote S-kill of Capcommunity

Behold, the promised Monster Hunter surprise: your chance to design, name (or design AND name) a weapon in Monster Hunter Tri!

Sword, bow, shield, lance--any official category is welcome. You imagine it, send it to us, and if we choose your design, it could end up in the game. This is really pretty simple in the details, and there's even a chance for people with no design skills to get involved by coming up with a great name for a few as-yet unnamed artifacts.

We need your entries no later than Sunday, Sept 27th, 11:59PM BST in order to give the team time to work on them, so get cracking! It may be Labor Day in the US, but I'm guessing more than a few of you are going to nose to the grindstone on this one right away...

Hit the jump for full rules!

Can you master the art of weapon forging?

You've slaughtered and captured monsters, gathered together for life-threatening missions and ventured in perilous grounds but do you have what it takes to forge the perfect Monster Hunter's weapon? Prove it!

To celebrate its ever growing Community, Capcom has two challenges for all Monster Hunters:

FORGE THE WEAPON: design a new weapon for Monster Hunter Tri (PAL region). The weapon must belong to one of the official categories (Great Sword, Sword & Shield, Hammer, Lance, Switch Axe, Long Sword, Bowgun - Light, Medium, Heavy).
NAME THE WEAPON: your drawing skills haven't improved since you were 2 years old but words are your thing and you have always thought there should be a Long Sword called Aninchlong in game? We have some nameless, mysterious weapons in need of befitting names. Submit your suggestion indicating what category the weapon belongs to.


The rules


General

This competition is open to EU, Australia and New Zealand residents only (see Capcom Europe for EU, Australian, and New Zealand submissions)
Submissions can only be accepted by sending a message with the relevant contents or links.
Entrants must be 18 years or older
Winners will be selected at Capcom's discretion
Capcom reserves the right to amend and modify any part of the competition at any time

Forge the Weapon

Only one entry/drawing for each forum member. Multiple entries submitted through multiple accounts by the same person will be disqualified
The submitted design can be accompanied by an original weapon name
Any drawing technique is allowed

Name the Weapon

Only one entry per category allowed (Great Sword, Sword & Shield, Hammer, Lance, Switch Axe, Long Sword, Bowgun - Light, Medium, Heavy)
Copyrighted names are not acceptable and will be disqualified
Inappropriate and/or offensive names will be disqualified.

quote Xeros_the_Slayer

That would be because entering this contest involves giving the rights of your ideas entered to Capcom and minors aren't allowed to enter contracts like that by law.