Rocksmith is a music game where a guitar is used as a controller to play songs popularized through the Guitar Freaks, Guitar Hero, and Rock Band series. Unlike those games however an actual guitar is used. Almost any electric guitar can be plugged in using a custom standard 1⁄4 in (6.35 mm) output jack of a guitar to a USB plug to transfer the signal from analog to digital. The Real Tone cable is included with every copy of the game but can also be bought separately as the game can be played in split-screen multiplayer.
The gameplay involves playing songs by timing notes correctly on the screen, with an adaptive difficulty level that starts with single notes and gradually becomes more complicated. Near the bottom of the screen is a horizontal overlay that shows the correct position on the fingerboard, while near the top of the screen the lyrics flow by along with the overall score based on accuracy and difficulty. An overall rating keeps track of the progress throughout the entire game.
In amp mode, the sounds of the guitar can be tuned through pedals and amplifiers, which can be mapped to three slots to activate them during songs. Preset settings are used for each song by default, but custom ones are unlocked when a song has been properly played. A riff repeater option offers custom difficulty levels by breaking up the songs into parts such as the intro, outro, solo, verse, and it comes with three modes.
Various minigames are offered to practice 12 specific guitar skills such as chords, sustains, shifting, tremolo etc. There are variants of Galaga, a slider puzzle, a baseball game, a "Simon says" game, one where zombies are shot through chords, and more. The game also comes with a selection of over 50 classic and modern rocks songs, some unlockables when a double encore is achieved in a journey mode.
Rocksmith was released on the Playstation 3 console in 2012 for the UK market, and it is classified as a Music genre game.