Depending on which "Rush" game you are looking for, here are safe and official ways to find them:
: A famous tower defense series. You can play the originals for free on official flash-alternative sites like Armor Games or purchase high-quality versions on mobile app stores and Steam. download-rush-game-free-top-rar
: RAR archives from unofficial sites often contain executable scripts or Trojans disguised as game files. Depending on which "Rush" game you are looking
: Multi-part archives (the "piece" you mentioned) frequently fail to extract if one part is missing or from a different version. download-rush-game-free-top-rar
If you are trying to fix a specific error with a file you already have, could you clarify it is and what error you are seeing?