Providing the source where you found it (e.g., GitHub, a Discord server, or a synth forum) would help identify its specific purpose.
If you have just downloaded this file, here is the "story" of what is typically inside: OP-LAS-Alpha_v0.1-mac.zip
On a Mac, an Alpha build from an unidentified developer will often be blocked by Gatekeeper . You usually have to right-click and select "Open" or go to System Settings > Privacy & Security to allow it to run. Providing the source where you found it (e
In indie game development, "Alpha_v0.1" denotes the first functional build shared with a small group of testers. Common "Alpha v0.1" characteristics a Discord server