GRIT Multigenre Miniatures Rules

GRIT is a set of free wargames rules for nearly any genre. The authors write:

 

GRIT™ is a system of rules designed for tactical gameplay with 25 — 28 mm miniatures where each figure represents one person or creature. The rules can be used for scenarios where each player employs a single miniature, a tactical squad, or battle groups with reinforcements. Distances are presented in the form of inches with the scale 1″ [2.5 cm] on a table-top or playing surface (if using Adventure Areas™ or other interior gameplay surface this is divided into 1″ squares or hexes), equaling 5′ [1.5 m] — all measurements listed in feet are relative to scale of the miniatures. GRIT may be used for solitary play or for two or more players — a Gamemaster (referee) is optional (employed for ‘double-blind’ games where players only place miniatures on the play area when they are in the Line of Sight of opposing figures).

GRIT was developed in response to a demand for miniatures rules that balance fast setup and gameplay with unlimited Action alternatives and roleplay style Characters that can develop their capabilities. GRIT Scenarios can encompass any genre or time period and make use of any style of miniature figure or terrain element. Victory Conditions, Scenario Complications, and level of realism and detail can be as simple or complex as desired.

Players have the option of basing Characters on a template, an existing roleplay Character, or generating an original Character with unique Stats. Characters can attempt any desired Action, and have the capacity to revive from unconsciousness, heal, and use any weapon or object.

 

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.