Insurgency: Sandstorm is not free on Xbox. It is a paid game that requires a purchase in order to play. The game is available for purchase in the Xbox Store and its price may vary depending on any ongoing promotions or discounts.
When it comes to multiplayer on Xbox, an Xbox subscription is also required to access online multiplayer features. Xbox Live Gold, which is a subscription service, is needed to play multiplayer games online. This subscription is sold separately and is not included with the purchase of the game. It is worth noting that the cost and duration of the Xbox Live Gold subscription can vary depending on the plan you choose.
In terms of in-app purchases, Insurgency: Sandstorm does offer some optional in-app purchases. These purchases may include cosmetic items, such as weapon skins or character customization options. These items are not necessary to enjoy the core gameplay experience and can be considered as additional content for those who wish to personalize their in-game appearance.
I have personally played Insurgency: Sandstorm on Xbox and found it to be a highly immersive and intense multiplayer shooter. The game features realistic gameplay mechanics and a strong focus on teamwork and communication. I enjoyed the challenging gameplay and the variety of maps and modes available.
Insurgency: Sandstorm is not free on Xbox and requires a purchase to play. Additionally, an Xbox subscription is needed for online multiplayer. The game does offer in-app purchases, but they are optional and not essential for gameplay.