TG is a combo deck and is strongest when going first. This deck is based on Summoning OP supports like TG Trident Launcher through Crystron Halqifibrax . From there you can jump into some monsters that are incredibly strong and are the boss of this deck like Cosmic Blazar Dragon or TG Halberd Cannon. The strength of this deck lies in the fact that it plays with a bunch of engines without worrying about bricking (unless you mix too much like a 6-star normal monster from PSY, for example), creating favorable conditions for Summon TG Trident Launcher .
The main limitation of both the deck and TG Trident Launcher is that after Summoning TG Trident Launcher, you will be restricted from jumping TG monsters for the entire turn, so read the card text. :). However, you can avoid this effect because these guys can Synchro Summon during your opponent's turn :D.
Their combos are the same, it's called textbook :D. So if you meet someone who knows TG or has played it before, they will be countered by the handtrap. But this deck has very few players so this problem is not a concern :D