Gonna be blunt, I've always found it kinda weird how many people seem so obsessed about getting credited for things ripped from games. Like, you didn't make it. Shouldn't the original company or developer get the credit instead?
If anyone wants...
Invincibility give a lot of unique charm to the game, even if it resulting in punishing by making you redo certain sections sometimes, it gives a pretty cool seamless feeling. And also encourages for you to experiment with everything without fear...
Hardmode Zeekeeper nearly filtered me from my M&L marathon... but I beat it. The saga continues!! Thank goodness there are no more annoying battles that rely on the ever delicate touch screen and gyroscope in that game.