How can I play other versions of game?

i mean like tanki 2.0

In the end of 2009, alongside with the current project “Tanki Online”, AlternativaPlatform began development of a new project called “Tanki Online 2.0”. It was supposed to be a brand new product with more realistic graphics, a more convenient UI and a huge amount of convenient options and functions (social networks, mobile gaming, etc.). However, after one and a half years, it was decided to scrap that project and gradually transfer most new features from it into the existing version of “Tanki Online”.