hello , is there any chanse to have different version of terraria installed at the same time ? so i can play like 1.3.5.3 and 1.3.4.4 and maby 1.3.6 and so on ? so i can use mods or not using mods? and so on ?

You can do it with GoG Galaxy. Go to settings under MORE and under override features select the version you want. Copy your entire Terraria folder and save games somewhere else. You can then select a different version in Galaxy and do the same.

While you can run each different version of Terraria in its own folder, the biggest issue comes from saves which would be shared among different versions and will result in issues with newer version saves in older version games. So before you start a particular version just make sure you move the different version saves somewhere else before copying over current version.

[EDIT]

Saves for Windows is located in .../My Documents/My Games/Terraria

ok