Hi, does anyone know about any purely instrumental (and fun, if possible :D) songs for RS 2014? (for example in the same fashion like Jules in original RS). Thanks for your suggestions!

Off the top of my head, check out The Black Keys' "Black Mud".  Both rhythm and lead are fun to play.

 

http://customsforge.com/page/customsforge_rs_2014_cdlc.html/_/pc-enabled-rs-2014-cdlc/black-mud-r8479

I know some 
Zakk song: http://customsforge.com/page/customsforge_rs_2014_cdlc.html/_/pc-enabled-rs-2014-cdlc/farewell-ballad-r280
Unguided: http://customsforge.com/page/customsforge_rs_2014_cdlc.html/_/pc-enabled-rs-2014-cdlc/iceheart-fragment-instrumental-r275

search instrumental in search :D
 

There's an acoustic only (no bass or vocals) from In Flames : http://customsforge.com/page/customsforge_rs_2014_cdlc.html/_/pc-enabled-rs-2014-cdlc/varmlandsvisan-r3319

 

I know Dream Theater also have some songs which are instrumental only too.

Patterns In The Ivy

Metallica's Call of Krulu, Orion (there is also live version) and To live is to die.

At the moment I have charted 3 instrumental songs.

1. Animals as Leader - CAFO (Drop D)
2. Conquering Dystopia - Autarch (B Drop A)
3. Koji Kondo - Gerudo Valley (E Standard)

 

 

I know Dream Theater also have some songs which are instrumental only too.

Here are the links to all of the Instrumental Dream Theater, in no particular order.

1. Overture (E Standard)
2. Enigma Machine (B Standard)
3. False Awakening Suite (A Standard)
4. Erotomania (E Standard)
5. Instrumedley (E Standard)
6. The Dance of Eternity (B Standard)

I also recommend that you check out Scale The Summit 

Have Fun

Nightwish - Moondance

Check out the Shadows, the Ventures and Freddie King.