This is an Unchained Kaiju deck I cooked up. Given how Unchained's entire gimmick is getting your own cards blown up, I thought it would work well with a Kaiju engine. Your goal is to go second, 100% of the time. Interrupted Kaiju Slumber can be used to give you a strong Kaiju while giving your opponent a weaker one, while also destroying your Unchained monsters and summoning more of them from the deck.
After doing the above combo, you can summon Unchained Soul of Disaster or Rage, and use their effects to get rid of the opponent's Kaiju and do a Link Summon. I just named this deck "GODZIRRA!" because I could not think of any better names. If anyone here has better ideas on what to name this deck, let me know in the comments.