Explosions are nicely rendered and fires burn with gusto. My major complaint with the graphics deals with the units. They simply blend together too easily and are very difficult to tell apart. This becomes a significant problem when you have older technology that looks like newer technology. Each unit is essentially built using the same body with variations in weapon or system.
Body types can be upgraded, however, generally the units look very similar.
Machinegun units look alike. Repair units look like flame units. It can be quite confusing at times. The sound in the game is pretty good though not spectacular. There are a number of interesting Warzone 2100 features worth mentioning.