Streets of Rage 2 hack created by gsaurus, creates a new "extreme" challenge for the seasoned SOR2 player. Features include:

- Heroes are faster and stronger, well balanced and with unique improved moves, including a different infinite combo for each character.
- Weapons are now more useful.
- Faster enemies and different enemy distribution through the levels. Less opportunities to cheat with enemy activations. There are a couple of interesting modifications such as a "bonus jet" on level 5.
- Shorter delay on hits
- No delay after punching, so the gameplay is more fluid (SOR3-like)
- Improved Skate running (pressing forward twice is more responsive, improved ability to restart running when turning around)
- Display number of K.O.s during gameplay
- New colours for enemies, players and some backgrounds
- BGM 1 and 9 are now used