[citation needed] Among them were Project Space Station, Mr. TNT, Turtle Graphics by David Malmberg, several Jeff Minter games (Llamasoft), such as Attack of the Mutant Camels, Gridrunner, Hes Games, and HesMon, Graphics BASIC, 64Forth (a cartridge-based Forth implementation), and the HesModem and HesModem II.

The company was founded in Balakrishnan's apartment in Los Angeles, where he took down the door to his bedroom, put it across two file cabinets, and used that as a desk for his development (winding the cables around the doorknob).

Shuster soldered the HEScom cables in his garage and wrote HESlister, a print utility for BASIC programs, that he ported from a TRS-80 Model I to the PET, to the VIC, and later to the IBM PC.

Game writers Lawrence Holland and Ron Gilbert, who later worked for LucasArts, started their careers at HES.

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