Download info for 3D Firestrike Ultra.
The title clearly indicates availability. You can obtain it for free from the official source or trusted platforms.
I did not purchase it; I obtained it via Steam a few weeks back during a discount period.
You need to purchase it. The free version offers the core features of Firestrike. It frequently has discounts on Steam.
Ultra costs money and based on your computer details in the signature, you probably wouldn't be able to install it.
I understand the issue with my computer. I was just checking.