Released in arcades on this day 40 years ago (21 July 1986):

Toaplan’s Slap Fight (aka A.L.C.O.N.)

Taking place in the year 2059 in another galaxy, mankind has colonized an alien planet called Theon after evacuating a previously colonized planet Orac. Five years ago, the colony on Orac was attacked by alien invaders and the war was so intense, the colonists were forced to leave. However, Theon is now under attack by the same alien fleet, but the humans are ready. The player assumes the role of an Allied League of Cosmic Nations (ALCON) fighter pilot in the SW475 star fighter to stop the invaders from taking over Theon.

I only played Slap Fight for the first time this year. My initial reaction wasn’t great, I judged too quickly; this is one of the more addictive Toaplan shooters. The power-up system and hidden items, and the secrets make this game very interesting. I’ve seen this referred to as an easy game, but I still find it frantic especially when you combine the giant hitbox, enemies that can snipe you from all angles, and keeoing track of your upgrades.