Yes, why pay pounds for wargaming books and rule sets when there are many systems online.
We have compiled a list of quality free wargame rules and free RPG systems below.

Top 5 Free Wargames

Kings Of War – Fantasy Wargame [download]

Download Kings Of War Table Top Fantasy Battle / Wargame for Free using the link above. Kings of War is the game of mass combat between mighty armies in a fantasy world torn apart by epic conflict and legendary battles. Its fast-paced, competitive rules make the game ideal for massed battles between hundreds of troops – and with Mantic’s range, it’s possible to do just that without breaking the bank!

Dreadball – futuristic sports board game [download]

DreadBall is a futuristic sports board game played with 30mm miniatures, set within Mantic’s Warpath universe. You are the Coach of your team, testing your skill and luck against other Coaches in one-off matches or long-running leagues.

Deadzone – Futuristic Skirmish Game [download]

Download Deadzone Wargame Skirmish game quick start guide for free.
With a simple set of rules for tactical and strategic gameplay, Deadzone contains everything you need to become the commander of your own elite squad and wage war across an Urban Battlefield.

Warpath – Futuristic sci-fi mass battle wargame. [download]

Warpath is the sci-fi mass battle combat game and miniatures range from Mantic Games, written by Alessio Cavatore. Two players pit massive armies of sci-fi warriors and vehicles against each either to capture objectives and eradicate the opposing forces. Featuring stunningly detailed miniatures, Warpath allows you to build your army, choose your battlefield and play massive games without breaking the bank.

Still want to pay for Games Workshop Warhammer / Warhammer 40K? Well they do have an excellent track record of games production, tried and tested rules, great cover art and detailed worlds, but so do the above products by Mantic Games.

Top 5 Free RPG

FATE – Technically Not Free but Pay as you like. [Download / Contribute]