Chain Reaction 2015 is an introduction to Two Hour Wargames. It's a complete game – not a teaser – and is free. Chain Reaction 2015 is a set of man-to-man combat rules that can be played in a variety of periods and with any figures you may already have.
Chain Reaction 2015, like all THW games, can be played solo, cooperatively – all players on the same side – or competitively – head to head.
Learn one set of mechanics, play many periods.