[Troll]

Kimo I don't think you understand (I don't know if I do either) what is going on here, all he has done is taken the Runescape client and de-compiled it, there is nothing Illegal about that, it is a client, without it the game would not exist.

It sounds as if he coded a client since he said he was banned for using his client - if it was the official RuneScape client he wouldn't be banned for using that. o.o;

I think it is the way he is using it, in other words he isn't using it on the website or the Windows client thing.

[Ratty]

So you're changing Jagex code, basically. Illegal, buddy. It's not open source code, and just because it's on your computer doesn't mean it's yours and that you can change it. Read up intellectual property laws. =P

[Atilla]

Decompiling typically doesn't give you the source code. Rather something fairly similar.

Also, from their ToS:

Intellectual property rights
Jagex®, RuneScape® and FunOrb® are registered trade marks of Jagex Limited in the United Kingdom, the United States and other countries.

You must not reverse-engineer, decompile or modify any Jagex Product client software in any way (except to the extent allowed by applicable law). You must not use a modified/customised version of the client software or attempt to sub-license it. You must not create or provide any other means by which any Jagex Product may be played by others (including, without limitation, replacement or modified client/server software, server emulators).

Materials (including without limit all information, software, data, text, photographs, graphics, sound and video) placed on any Jagex Product by us or on our behalf are protected by copyright and other intellectual property rights of ourselves or our business partners / suppliers / advertisers. You may not use these materials or any Jagex Product except in accordance with these terms and conditions and for personal (i.e. non-commercial) use only.

I suppose one would have to read the DMCA or something like it in full to know what the extent allowed by applicable law is.