Highway Encounter
Platform: MSX
Region: Europe
Media: Disk
Controller: Keyboard, Joystick
Genre: Action > Isometric > Strategy 
Gametype: Undefined
Release Year: 1985
Developer: Vortex Software
Publisher: Dinamic
Players: 1
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In this isometric 3D action-strategy game, the player uses a Vorton droid to push a bomb to the end of the highway into an alien base. There are 30 screens, most of them filled with hazards trying to block (like barrels) or destroy (mines and aliens) your bomb. 

The perspective and guidance concept are not the game's only original features; there are 4 more bombs with you, representing your extra lives - pushing you forward on your mission. If these other Vortons are destroyed, one of your extra lives is lost without the player being able to use it.

http://www.mobygames.com/game/msx/highway-encounter