Since you cannot buy it digitally anymore, avoid "free download" links that promise the full game for nothing—these are often phishing attempts or contain viruses. Instead, consider these legitimate alternatives:
Here is the essential information regarding the game's current status and how to play it safely. jump-force-free-download-v3-02
The game and all its DLC were removed from digital storefronts like Steam, PlayStation Store, and Xbox Store. Since you cannot buy it digitally anymore, avoid