Time Commando

For retro gaming lovers, discover a jewel from 1996: TIME COMMANDO

A deadly virus has invaded a top secret military super computer. Its catastrophic time-warping effects now threaten to overtake the computer systems of the world. If you cannot restore its memory in time, the growing virus will cause the world's collapse. You must journey through the corridors of history to stop this technological demon. But vicious warriors await with lethal purpose. Instinct will be your only ally. All-out combat, your only choice.

Time Commando will take you on a journey in time and space that you will never forget. With plenty of weapon types, stylized visuals, and diversified gameplay it should keep you entertained for many hours. This title is very unique and it should be a part of every serious game collection.
9 Worlds to explore, each in a different time and place: prehistoric, Roman, feudal Japan, Medieval, Conquistador, the Wild West, and the modern wars.
Impressive arsenal of weapons, from Katanas through rifles and spells to a technologically advanced combat yo-yo.
Entertaining and challenging puzzle-solving elements, stylized visuals, and an original story.

Disclaimer 1: this game uses DosBox
Disclaimer 2: this is the european version of the game. The introduction has no voice over.
Disclaimer 3: start with the easy mode ;)