The First 15 Minutes of 超鋼戦紀キカイオー (Tech Romancer, Dreamcast)

Copied from MobyGames:Tech Romancer is a 3D arena fighter with a difference: rather than controlling a martial artist, the player selects one of the several available giant robots. These range from the absurd to the "typical" anime styled mecha to a more westernized idea of a mech.The gameplay takes part in large 3D arenas, usually dotted with buildings and other landmarks, many of which are destructible and may contain power-ups. Game controls consist of two attack buttons, one block, and one jump. Characters have a special bar; once it is full, a special move can be executed. There is an armor bar, which depletes as the characters take or block certain hits; if it runs out, the character will start taking hefty damage even when blocking. The life and time bars are self-explanatory, and there is also the special-weapon inventory, which can hold up to five special weapons at a time.The main single-player mode is a story mode, which is completely different for each character and, for most characters at least, branches many ways, often with multiple endings depending on choices made and targets met.

http://www.nicovideo.jp/watch/sm41635855