Invasion of the Mutant Space Bats of Doom

INVASION OF THE MUTANT SPACE BATS OF DOOM Version 2.7: This PC arcade shoot'em-up scroller pits you against wave upon wave of swooping, circling, diving space bats! Fast colorful animation, power-up crystals, bonus rounds, hot music and sound-effects, and superb animation! Can you survive the mutant space bats and save Earth? Find out! A highly-rated, must-have classic! EGA/VGA, mouse/kb/joystck. Shareware by Pop Software.

Source:

Shareware CD