SingStar is a competitive karaoke music video game series developed by London Studio and published by Sony Interactive Entertainment. Dozens of installments were released for the PlayStation 2, and several more for the PlayStation 3. It is also available on the PlayStation 4 as a free app download, with users paying for the songs as individual or bundle downloads. The games have also undergone a number of non-English releases in various European countries.

SingStar games on disc for PlayStation 2 and PlayStation 3 are distributed either as the software alone, or bundled with a pair of USB microphones – one red, one blue; wireless microphones are also available. The games are compatible with the EyeToy, PlayStation Eye, and PlayStation 4 cameras, allowing players to see and record themselves singing. The PSP (PlayStation Portable) was also able to manage a playlist in realtime, where users were able to queue songs they wanted to sing, so the decisions weren't made between songs, leading to fewer breaks.

All SingStar and SingStore servers were shut down in January 2020. All offline content remained accessible after the shutdown.

SingStar games require players to sing along with music in order to score points. Players interface with their console via SingStar microphones while a music video plays in the background. The pitch players are required to sing is displayed as horizontal grey bars, which function similar to a musical stave, with corresponding lyrics displayed at the bottom of the screen. The game analyses a player's pitch and timing which is compared to the original track, with players scoring points based on how accurate their singing is. Different modes of SingStar may vary this basic pattern, but the principle is similar throughout.

SingStar includes a variety of game modes. The standard singing mode allows one or two people to sing simultaneously, either competitively or in a duet. The game also offers a "Pass the Mic" mode, which allows up to eight people to play a series of rounds in two teams. The original SingStar for PlayStation 2 also featured "Star Maker", a single player career mode, but this was dropped in subsequent releases due to the popularity of the multiplayer and party modes.

Most SingStar games for PlayStation 2 differ only in the track list contained on the game disc. SingStar games typically ship with 30 songs. Individual SingStar games are loosely based upon genres, such as rock or pop music (SingStar Rocks! and SingStar Pop respectively). SingStar games were sometimes localised for release in different regions, with customised track lists to suit foreign markets and territories. In addition, a number of non-English language SingStar games have been released exclusively in some European countries.

All SingStar games (except the original SingStar and Singalong with Disney for PlayStation 2) allow players to swap out the current disc (called the master disc) for another SingStar disc. This allows access to the songs on other versions without the need to reset the console; it also allows PS2 SingStar discs to be played on a PS3, regardless of its PS2 backwards compatibility status, by starting with a PS3 master disc. When a new disc is swapped in, the game retains the functionality and appearance of the master disc. By starting with a new version, players can swap in their old SingStar disc and experience them with the functionality and cosmetics of the master disc.

The PlayStation 3 version of SingStar introduced a number of online features, accessed through the PlayStation Network. Users were able to purchase songs online from the SingStore, allowing them to expand their current music selection. The SingStore launched with 41 songs, with further 1044 songs for download. All music videos are in standard definition, although videos were offered in high definition if possible.