If you like playing solitaire sessions, check out the moonfrog solo variant in the files section. It is created in the classic approach; with the player playing both sides. However, this style does not lend itself well to the surprise element found in the Vietcong's tactics. The purpose of this variant aims to correct this by keeping the US side guessing (adjustments have been made to help retain the unexpected).
The other aim of this variant is ease of gameplay. Selective elimination of rules sections, and the inclusion of a step-by-step reference sheet, is intended to help this aim.