Bulgarian programmer Ventzislav Tzvetkov (aka drHirudo) has ported his Amiga game Wall Defence, to the Apple II. In Wall Defence you play a knight defending your castle wall from a horde of invading orcs. The knight must throw stones at the orcs ascending the wall on ladders. If an orc is able to win the top of the wall, the knight dies. Unfortunately for the knight, the orcs climb at different speeds, so the player must throw his stones with care for maximum results.
drHirudo has also programmed other games for the Apple II including Garden and MazezaM.