Making your own chapter is quite easy. However, making one from the pre-heresy era is not recommended as all the chapters then were known and numbered.
Don't use the weapons from other races in your chapter, but you can make some good models from parts or equipment from them, just stay away from their weapons.
Don't make the weapons to are different to traditional Marine weapons.
There are no rules surround it, or stopping your from doing it. In tournaments, it wouldn't be legal, but so long as you give your race a decent background and agree on rules to use with an opponent it should be fine.
Planetary Empires is Gamesworkshops answer to that. It is a customizable board and has rules for a Warhammer 40K campaign.
Defineitley 40K.
AnswerAt the moment, GW do not make a set of rules for matches like that, so no, 40k armies can not play FB armies.== ==
No, in Warhammer 40k, each army must consist of units from the same faction. Mixing armies from different factions is not allowed in the standard rules of the game.
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You'll find the answer in the Codex:Chaos Space Marines.
Unless you are using Night Fight rules, they are useless.
Answer Warhammer Epic is much smaller than 40K. It is also cheaper.
Games Workshop made the Warhammer 40k Tabletop Game.
In the 9th edition of Warhammer 40k, there have been changes to the shooting rules that include new modifiers for cover, changes to the way line of sight works, and adjustments to how certain weapons interact with different targets.
AnswerThey are Orcs from Warhammer fantasy, but in space. They are a green skinned race of crazy blood thirsty aliens who plague committing murder and genocide. They are the comedic relief race of Warhammer 40k.