Zzap!

The last starfighter humanity has left is yours to pilot. The engagement takes place in a hyperspace subdimension that operates outside Einsteinian physics — a pocket of altered reality where an alien force is pressing in with every ship and creature they have. Enemy behavior varies significantly: some are passive until provoked, some pursue the player actively, some become more dangerous as they are injured, and some explode when another ship passes too close — a property that can be used offensively. Destroying enemies builds both the score and a score multiplier, but taking damage removes a life and cuts the multiplier in half. Powerups offer point boosts, multiplier improvements, weapon upgrades, and emergency bombs. Survive long enough at a high enough score and an extra life becomes available.