Obstickle (Mal Lavery, 1991)

Enter as code for a constantly different landscape:
Monday, Thursday, Friday, Saturday, Future

Level Passwords:

Level  1: GRASP       Level 11: EPISODE     Level 21: HERO
Level  2: PERFORM     Level 12: SKIMPY      Level 22: FARTY
Level  3: SHOULDER    Level 13: LEVER       Level 23: CAUSTIC
Level  4: OUTSTRIP    Level 14: LUCKY       Level 24: PARTIAL
Level  5: CALCULAS    Level 15: INFEST      Level 25: SERVANT
Level  6: OSTRICK     Level 16: INFIDEL     Level 26: URGENT
Level  7: PERFECT     Level 17: DAISY       Level 27: CLEVER
Level  8: GEAR        Level 18: SPANNER     Level 28: ARSEWIPE
Level  9: LAVISH      Level 19: FLOPPY      Level 29: MOUSE
Level 10: LACQUER     Level 20: SPEAKER