Hi! Thanks for asking.
The game is a 32K CDFJ bankswitching game. For the digital ROM version, the intended real-hardware setup is a Harmony or Harmony Encore cartridge on an original Atari 2600 or a 100% compatible console.
It should work in current emulators such as Stella, Stellarator, and Gopher2600, and on a RetroN 77 with the latest Stella community build.
The ROM version should not be expected to work on Atari 2600+, Flashback models, MyArcade Gamestation Pro, or MiSTer FPGA. The physical cartridge version will probably work on Atari 2600+ / 7800+ with a firmware update, but that has not been confirmed yet.
I recommend trying the demo first to make sure it works on your setup.