1. Open terminal
2. Download key

   wget http://repo.evolonline.org/manaplus/4144.asc

3. Install key

   sudo apt-key add 4144.asc

1. Open synaptic: System / Administration / Synaptic package manager
2. Select menu Settings / Repositories
3. Select tab Other Software
4. Press Add
5. Type:

   deb http://repo.evolonline.org/manaplus DIST main

   DIST is your distro name. All supported distros:

   deb http://repo.evolonline.org/manaplus jaunty main

   or

   deb http://repo.evolonline.org/manaplus karmic main

   or

   deb http://repo.evolonline.org/manaplus lucid main

   or

   deb http://repo.evolonline.org/manaplus maverick main

   or

   deb http://repo.evolonline.org/manaplus natty main

   or

   deb http://repo.evolonline.org/manaplus oneiric main

   or

   deb http://repo.evolonline.org/manaplus lenny main

   or

   deb http://repo.evolonline.org/manaplus squeeze main

   or

   deb http://repo.evolonline.org/manaplus wheezy main

   or

   deb http://repo.evolonline.org/manaplus sid main

6. Press Reload
7. Now you can install manaplus package.

Run in terminal:

sudo aptitude install manaplus

or

sudo apt-get install manaplus

or select and install in synaptic package manaplus

Also you can use mirrors http://4144.rootx.nl/mana or http://repo3.evolonline.org/mana

Examples for maverick:

deb http://repo.evolonline.org/manaplus maverick main
deb http://4144.rootx.nl/mana maverick main
deb http://repo3.evolonline.org/mana maverick main

See also: screenshots

Debian, Ubuntu