Update "Cyclic Saves" — Ancient Planet Tower Defense Steam update #120456

In this update we rethought game progress saving. Before this update each player profile was saved in a separate file and if this file was corrupted, the player would lose all progress. Now there are three files for saving each profile. The game cyclically writes all the changes in sequence, so that if the last of these files gets corrupted, the player's progress rolls back a small step instead of losing all game progress.