Xor for GameBoy Advance

Mick has posted this:

Xor is a re-make of an original game by Astral Software and Logotron. They entirely own all copyrights to the game design and mechanics. I am not trying to rip anyone off with this remake, particularly since I am distributing it via the internet for free. Other re-makes of Xor are also available so I figure that anyone involved with the original game are either unaware of the newer versions, or don't care since nobody is trying to make any money from the game.

Screenshot and download via comments