Tokyo 42 is described as 'lets you take to the streets of a vibrant, hand-crafted micro world as an assassin'. There are more than 10 games similar to Tokyo 42 for a variety of platforms, including Windows, Steam, Playstation, Xbox and Android Tablet. The best alternative is Grand Theft Auto. It's not free, so if you're looking for a free alternative, you could try Gangstar or APB Reloaded. Other Tokyo 42 like games are Monument Valley (Paid), Saints Row (Paid), FEZ (by POLYTRON) (Paid) and Just Cause (Paid).
Grand Theft Auto, abbreviated to GTA, is a video game series developed by Rockstar North (formerly DMA Design) and published by Rockstar Games. The name of the series is derived from a term referring to motor vehicle theft.
Saints Row is an action-adventure video game series created by Volition and published by Deep Silver, that tells the story of a gang called the Third Street Saints; the title comes from the name of the district of the gang's home territory.
FEZ is a game developed by POLYTRON. In it, you play as Gomez, a 2D creature living in what he believes is a 2D world. Until a strange and powerful artifact reveals to him the existence of a mysterious third dimension!
L.A. Noire is a neo-noir crime video game set in Los Angeles in 1947 and it challenges the player, controlling a Los Angeles Police Department (LAPD) officer, to solve a range of cases across five departments.