RULES

So far the rules are called '--DUCK!' and stem from the following premises -

When a Duck says " Duck!", You duck!!!

1. 54mm  1/35  1/32  Army Men scale
2. The Universe is a 'hard' sci fi one : no super-dooper mental powers, no magic, no 'rays' or 'beams' . Technology must have an Achilles heel. Only the JET drive is presently unthinkable.
3. The game is in the confined space of a spaceship. Spaceships have not become million tonne behemoths. They cost money. They are compact.
4. No life forms with human-level intelligence have been found. The most advanced eemy can only use simple weapons. The most deadly adversary is...other humans.
5. Weapons are developed to allow combat on a spaceship without destroying the ship ! No highly penetrating weapons. 
6. Fire is dealt with by the ship's systems. It will automatically reduce oxygen in an area with fire. Sprinklers and deluge systems activate if temperature get too hot. Fire can thus be used as a weapon.
7. This is point 7 of 9 . Time enough to pause...
8. There is combat but there is also problem-solving and non-combat action along with characterisation of the figures - blend D&D, Squad Leader without excessive detail or overwrought technicalities.
9. Teams can be progressed, their career followed but no 'levels' or power enhancement.

The main books I have in mind are Starship Troopers,  Forever War, Bill the Galactic Hero and The Tunnels of Cu Chi. Games are Sorcerer's Cave, Sniper and the 'Aliens' boardgame.

Figure scale is large to allow easy and rapid painting. It also allows scenic elements to be made without being too fiddly. On the other hand if you WANT to go mad with detail you can and it is repaid more than in 15mm or 25 or 28(what is that scale !?).

Cheapnis is important. All must be possible without a big outlay and construction, scratch-building and conversion encouraged.

Developments are to allow other environments such as tunnels and jungle.