Hyper Dragon Ball Z is freeware game developed from the M.U.G.E.N engine by fans of the anime dubbed “Team Z2”. The gameplay focuses on the mechanics inspired by Street Fighter and Darkstalkers with other fighting games thrown into the mix (like Marvel VS Capcom and The King of Fighters).
Initially beginning as a simple brand of Dragon Ball Z characters to go against the traditional Dragon Ball Z characters introduced into M.U.G.E.N. so far (overly flashy, broken, suffering heavily from Sturgeon’s Law, etc.), the Z2 team of Balthazar (idea conceiver) and Cybaster (primary coder) expanded to include various others, including inspiring some other smaller projects in the team’s honor. It’s come to the point that a game based on the Z2 characters was realized, and the roster expanded from Goku, Vegeta and many more.
A beginning build of the game itself only included Goku, Vegeta, SS Goku, Mr. Satan, and the Saibamen; an updated EVO 2014 build replaced Mr. Satan and the Saibamen (who are still in the game as non-playable characters.) with Ultimate Gohan and a beta build of Final Form Frieza, along with some new music for the existing stages and new stages.
The “Majin Build” brought back Mr. Satan and included an updated Final Form Frieza along with new characters (Majin Vegeta and Babidi). Piccolo was then released on Christmas 2016, and was included with the Champ Build along with various updates (including, as the name suggests, an overhauled Mr. Satan). Super Buu was then released on August 8th 2017.
Soon to be released characters are Gotenks, Tien, Krillin, Android #18, and Perfect Cell. The download for the sample of the game is here.