Battle Isle is a turn-based tactics computer game developed by the German developer Blue Byte Software. The storyline is set on a fictional planet called Chromos, whose society is technologically more advanced than that of contemporary Earth.

The development of the game was heavily influenced by the game Nectaris for the PC Engine which was released 2 years prior. The engine that was used in Battle Isle was reused again in the following years for Battle Isle Data Disk 1, Battle Isle '93 (also known as Battle Isle Data Disk 2 or The Moon of Chromos) and for History Line: 1914-1918.