DRIFT · SHATTER · SHIELD
Classic asteroids with a twist: SHIELD BURST destroys nearby rocks at the cost of one shield charge. Each big rock splits into mediums, then smalls.
Drift complete.
A / D / ←→ rotate · W / ↑ thrustJ / Click / Auto fire (autoshoot)Space SHIELD BURST (1 charge)
Wraparound edges. Rocks break in half twice before vanishing. UFO appears every other wave — kill it for +500 and 1 shield charge.