Installers aren't typically used on GNU/Linux (only by companies that don't understand what they're doing on that platform, actually). A simple tarball should do fine (and would make it easy for distro's to roll their own packages)
There is absolutely no way its going to be a tarbar. That would imply that we will be given the source code. Larian won't be giving out the source code. As amazing as that might be, there is a greater chance of being invited to a My Little Pony birthday party by Damien where you get bitch-slapped by the Divine himself for not bringing the cake.
Linux has installers: .run, .deb, .rpm, .sh. Ring any bells. Deb and rpm are distro specific, and I'm hoping they won't be the only option.
