This is what you come up with when you're bored...

[.Nu-13]

Red Block | *1 | EARTH
[Machine/Effect]
This card cannot be destroyed by battle. At the end of Damage Step, if this battles a monster, give control of this card to your opponent. Once per turn, you can send 1 "Block" monster from your Deck to the Graveyard to inflict 800 damage to your opponent. If you do, give control if this card to your opponent.
ATK/0 DEF/0

Blue Block | *1 | EARTH
[Machine/Effect]
This card cannot be destroyed by battle. At the end of Damage Step, if this battles a monster, give control of this card to your opponent. Once per turn, you can send 1 "Block" monster from your Deck to the Graveyard to gain 800 Life Points. If you do, give control if this card to your opponent.
ATK/0 DEF/0

Green Block | *1 | EARTH
[Machine/Effect]
This card cannot be destroyed by battle. At the end of Damage Step, if this battles a monster, give control of this card to your opponent. Once per turn, you can send 1 "Block" monster from your Deck to the Graveyard to Special Summon 1 "Block" monster from your Deck, except "Green Block". If you do, give control if this card to your opponent.
ATK/0 DEF/0

Yellow Block | *1 | EARTH
[Machine/Effect]
This card cannot be destroyed by battle. At the end of Damage Step, if this battles a monster, give control of this card to your opponent. Once per turn, you can send 1 "Block" monster from your Deck to the Graveyard to remove from play 1 card in your opponent's Graveyard. If you do, give control if this card to your opponent.
ATK/0 DEF/0

Block Factory
Field Spell Card
All "Block" monsters on the field gain 500 ATK for each "Block" monster in your Graveyard. If a "Block" monster you control battles, you can discard 1 card at the end of Damage Step to reduce the Battle Damage you would take to 0.

Block Assemble
Normal Spell Card
Send 2 cards from your hand to the Graveyard. Special Summon 3 "Block" monsters from your Deck. They cannot activate their effects this turn.

Block Stack
Continuous Spell Card
Once per turn, you can discard 1 "Block" monster to draw 2 cards. If a "Block" monster you control is destroyed and sent to the Graveyard, send all monsters you control to the Graveyard.

More to come later if I feel like it

[Toffee.]

Normal Summon green
Green -> Green -> Green -> Red
Special Summon Cyber Dragon, and then Fuse for Fortress Dragon with 5000 ATK.
And then all the Machines in your Graveyard would give you an easier Overdragon.
I see what you did there....

[.Nu-13]

*facedesk*

I hate creating OTKs... edited

[Vector Nightmare]

I will say something that I always seem to think lately, when reading this kind of thread: your ideas are good, it's just that... they are incomplete. These monsters require certain dedication and cannot be splashed onto other Machine decks easily. I don't really find their purpose very clear - they seem to hover between swarming your field and locking down your opponent's field, but the Field spell is rather pointless in that sense. Block Factory is a good drawing card. All in all, by themselves, they are quite slow thus far, and though they can push by themselves, they lack a decisive winning condition. Also Green Block is missing a "to the Graveyard". It's sort of obvious they were designed to work with the Chimeratech monsters, but that alone doesn't really say anything about them as an archetype. I'm sure you can incorporate some power-play cards into the archetype, to make it more diverse and seem less than one in the already many ways to win with COD.

[.Nu-13]

They were meant to gain advantage from having many of them in grave, which you'll see later

[Vector Nightmare]

[quote name='Chillaccino' timestamp='1292960201' post='4871346']
They were meant to gain advantage from having many of them in grave, which you'll see later
[/quote]

That's actually quite obvious. But the advantage you get so far is too small and too slow to win you the game, so their only halfway competitive use would be to combine them in some sort of Chimeratech abuse deck. Hence why, incomplete. Unless, of course, you don't actually want them to be competitive. But then they'd just be a few monsters without really original effects or names, and with flavor support noone would care about. So pretty much like 99% of the actual cards out there.

...Yugioh makes me sad sometimes.

[Toffee.]

[quote name='Chillaccino' timestamp='1292960201' post='4871346']
They were meant to gain advantage from having many of them in grave, which you'll see later
[/quote]
Overload Fusion

[Azuh]

Blockman support?