Rock Band 2 (PS3) vs Rock Band 3 (PS3)

Rock Band 2 is a music video game developed by Harmonix Music Systems, as the sequel to Rock Band. Rock Band 2 allows up to four players to simulate the performance of popular rock music songs by playing with controllers modeled after musical instruments. Players can play the lead guitar, bass guitar, and drums parts to songs with "instrument controllers", as well as sing through a USB microphone. Players are scored on their ability to match scrolling musical "notes" while playing instruments, or by their ability to match the singer's pitch on vocals. Rock Band 2 features improved drum and guitar controllers, while supporting older controllers, as well.

Rock Band 3 is a music video game, and the third main game in the Rock Band series. Harmonix Music Systems is the primary developer for the game, and will be published and distributed by MTV Games and Electronic Arts. As with previous games in the series, Rock Band 3 allows players to simulate the playing of rock music and other genres using special instrument controllers mimicking lead and bass guitar, drums, and vocals. Rock Band 3 expands upon previous games by including three-part vocal harmonies—previously used in The Beatles: Rock Band and Green Day: Rock Band—and support for a keyboard instrument, a MIDI-compatible 25-key unit.

Rock Band 3 will feature a new "Pro" mode, which is designed as a learning tool to accurately mimic playing of real instruments: guitar and bass players will have to match specific fingering on frets and strings, drummers will have to strike cymbal pads in addition to snare and toms, and keyboardists will use precise fingering across the whole keyboard. MadCatz and Fender will be manufacturing controllers and add-ons to support the Pro mode. The introduction of the new keyboard and Pro hardware was done to make Rock Band 3 a "disruptive" title to revitalize the struggling rhythm game market after poor performances in 2009, while striving towards Harmonix's goals of incorporating real instruments into video games.

The game will include 83 songs, many designed to emphasize the keyboard instrument. Existing game content, including prior downloadable content and songs from the Rock Band Network, will carry forward into Rock Band 3, with the full Rock Band library reaching 2,000 songs by the end of October 2010. Rock Band 3 is designed to take advantage of players' existing libraries by providing user-created set lists and challenges and tools to easily search and select songs from the library.