Scott Adams is a known game designer who is one of earliest developers of CP/M and DOS games. He is the co-founder, with ex-wife Alexis, of Adventure International, an early publisher of games for home computers in 978 on a 16KB Radio Shack TRS-80 Model I, written in the BASIC programming language. Colossal Cave was a year earlier, but on a mainframe, the PDP-10. These early text adventure games use a minimal parser, recognizing 2-word commands of the form VERB NOUN. The parser only scanned the first three letters of each command, so inputting SCREAM BEAR, SCRATCH BEAR or SCREW BEAR would be treated identically. Scott had access to an advanced 16-bit computer at home, built by his brother Richard Adams, that gave him a jump on game programming in his leisure time.