For the most recent updates and to check for the eventual release of a native Mac build, visit the official Floating Sandbox website . FAQ - Floating Sandbox
If you just want a similar experience without the hassle, try (a web-based ship flood sim) or Sink or Swim (lightweight, but less realistic). Floating Sandbox Download Mac
Search for "Floating Sandbox" within the emulator's app store. Install and play directly through the emulator interface App Store Alternatives For the most recent updates and to check