Simple but super important updates, such as alien logic.

HEIANKYO ALIEN / 平安京エイリアン

The Heiankyo Alien, developed on a personal computer and released in 1979 as an arcade game from Denki Onkyo, is now ported and arranged for Windows! Arranged version "Heiankyo Alien 3671" is a time-based game, overwhelmingly addictive and euphoric, with new features such as seven items buried in the field, various scoring...

Changed the logic of aliens a bit.  Changed the logic of aliens so that they don't make a U-turn except when they enter a cul-de-sac. Changed the number of possible locations for the item that appears when you level up from two to four.