Heiankyo Alien
From Sega Retro
Preliminary code comparison shows that the two games are rather different, but I would need to dig deep to be sure... For the record, this message is at the end of Digger:
@WRITTEN BY DAVID L. EVANS, 4535 TAFT AVENUE, LA MESA, CALIF. 92041 AND BEAT OUT ON THE KEYBOARD OF A NOVAL 765! THANK YOU TERRY, BARBARA, CRAIG AND LARRY FOR SOME DEBUGGED SUBROUTINES...JUNE 25, 1980 GREMLIN/SEGA INC.