Contact from the bottom Double the drops of a coin you have finished (so you can get 2x the amount of things that Humbling Bundle does not double, nickels, under, ghost hearts, black hearts, etc.) But only the affected drops Contact from Below does not double the drops, but adds +1, which means that several contracts accumulate. The contract from below is much better, if a chest contains an item, both sheets of the contract will also have a better chance of finding a cricket head. Humbling Bundle affects everything in the game except Nickels, Dimes, Spirit Hearts, Black Hearts, etc. But double everything, including under pots and pennies ordinary ones, red hearts, etc. The contract with Guppy`s Tail in the Chest makes me prefer it to the Humbling Bundle. The contract is cool when you get double chests in The Chest, but Humbling has the edge in almost every other case. It is very unlikely that you will have too few keys or bombs on the run, donation machine exploits and infinite health with the potty. Humbling Bundle is better sooner, but Contract is better at the end of the game. .