Guilty Gear is a classic 2D fighting game developed by Arc System Works and first released in 1998 for PlayStation. The game is set in a post-apocalyptic world where humans and bio-organic weapons called Gears are at war. The plot follows ten fighters who enter a tournament to prevent the resurrection of the Gears' leader.

The gameplay consists of one-on-one fights with a four-button configuration that includes special moves and instant kill techniques. The game features three different playable modes. Devised by Daisuke Ishiwatari, the game took a year and a half in production with influences from Street Fighter and manga. The game has received favorable critical reception for its characters' roster, 2D graphics, and fast gameplay that differentiates it from other games of the same genre.

Although it is considered a classic game, it received criticism for its difficult and unbalanced set of characters. Guilty Gear is a game that has reached cult status among gamers and is considered one of the few games of its era to cause any sort of impact on the genre, except from Capcom and SNK hegemonic games. Overall, Guilty Gear is a must-play for fans of classic 2D fighting games.