Wild West Shootout

From Gettysburg Gamers: a set of free wargames rules for Wild West shootouts.

Fires of Space Rules

Fires of Space is a space combat game with a WWII naval flavor. From the author’s introduction:

Here is my take on battles between big ships in space. This rules set has a deliberately 20th century naval warfare flavor, but with adaptations for space and far future technology. Included are the rules, tables, designer’s notes, a series of ships from various space navies, scenarios, a probability table for 20 sided dice, counters, and a 50 by 50 hex map. With the map are marked map sections showing showing the map’s center hex and deployment areas for tactical scenarios. Ideally, the game is played with two 50 by 50 hex maps: one for operational movement and the other for tactical engagements. In a pinch, a single map can double as both the operational and tactical map. Finally, I include a copy of the Excel workbook that I used to create the ships in the game.

Fast and Dirty Science Fiction Rules Update

The Fast and Dirty science fiction rules have been updated to a fourth edition. The author writes:

F.A.D. is a skirmish rules set for science fiction and 20th century wargaming. The rules aim to provide a fun, fast and most importantly, realistic game.

Rather than troops charging blindly into gunfire, your men will be affected by suppression and losses. Officers are leaders and commanders, not supermen, and the emphasis of a battle is on men over materials.

During a battle, you will find troops getting pinned down and locked in bloody firefights, while trying to evacuate your casualties or bring up reinforcements to outflank that railgun position!

The game has its own background setting, but is generic and can be used with your existing miniatures and armies. The rules assume models to be mounted individually, but can work with any scale where this is practical. Typically this means 15mm and above.
The rules, as they stand now, cover infantry, artillery weapons, vehicles as well as peripheral scifi stuff like powered armour, drop troops and lots of other nonsense.
They will work for most 20th century and beyond games, with the emphasis being on modern day and near future warfare

Go! Go! Go! First Person Shooter Miniatures Game

Go! Go! Go! is a set of free wargames rules modeled on the computer game Counter Strike.

Exoshift Science Fiction Rules

Exoshift is a set of free wargames rules for mass battle science fiction games.