Imperium (Mobile Armoured Dion [機動装甲 ダイオン Kidou Soukou Daion] in Japan) is a vertical scrolling shooter developed by Jorudan and published by Vic Tokai in 1992 for the Super Nintendo Entertainment System.

Taking place in the year 2027, Earth is suddenly attacked by the planetoid space fortress Zektron.

The human's goal is to send Dion/Imperium into Zektron and destroy it only after the Earth occupation forces have been eliminated.

Players can replenish health and any downgraded weapon by earning back experience points.

In its September 1992 issue, Electronic Gaming Monthly estimated that Imperium was 80% complete and on track for November.