If it contains files, you can view them using any standard photo viewer.
Right-click the folder and select "Extract All" (Windows) or double-click (Mac) to reveal the internal files. Deathstrike2-Payback-Chapter-01.zip
The file is a digital archive typically associated with independent creative projects, such as a webcomic, fanfiction series, or a custom game modification (mod) . If it contains files, you can view them
While specific details depend on the platform from which it was downloaded, If it contains files
Most likely a collection of high-resolution images (for a comic/manga) or document files (for a novella).
If the file fails to open, it may be a "corrupt download." Try downloading the archive again from the original source.
Based on the naming convention, "Deathstrike 2: Payback" appears to be the title of a sequel series.