The game exists in at least two different versions: the original Quill A release (identified by being in first person) and the later Quill C release (in third person, and with some graphics).
As well as being published by Delta 4 themselves, the trilogy was re-released much later by GI Games (and then Zenobi).
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[+] Users currently playing this game
This is unmistakably McNeill's by the descriptions, but the game fails due to lack of content. It's more like a sketch of an adventure.