Easy Way to Add Money to Greed Machine

The Greed Donation Machine appears after every Ultra Greed fight in Greed mode or Greedier mode. Upon touching the Greed Donation Machine, Isaac will donate a coin, causing the displayed coin total to increment. Similar to the Donation Machine, the amount of coins donated will persist between all Greed mode runs. Donating money to the Greed Donation Machine unlocks achievements and items.

Jam Chance [ ]

• The machine can be jammed, like the Donation Machine, when adding coins.
• Each character's overall donation status is tracked separately across all playthroughs, so each character has a separate jam chance.
  • Characters introduced by mods have a 100% chance to jam the machine
  • The jam chance maxes out at 20% at 200 coins total in Greed mode, and 1% at 55 coins total in Greedier mode.
  • The jam chance updates in real time, so even with a character that has never donated to the donation machine prior, the machine will most likely eventually jam given enough donations.
  • The amount of coins added will persist across both Greed and Greedier runs.
  • In multiplayer, the HUD will display the jam chance of Player 1's character, but the machine itself uses the jam chance of the character that touches it.
• Like the Donation Machine, if a 1000th coin is donated, the Greed Donation Machine will explode, dropping several dimes.
• The detailed jam chance table is as follows:

Coins Donated	Greed Mode Jam Chance	Greedier Mode Jam Chance
0-54	0%	0%
55-93	1%	1%
94-113	2%
114-126	3%
127-137	4%
138-145	5%
146-152	6%
153-158	7%
159-164	8%
165-168	9%
169-173	10%
174-176	11%
177-180	12%
181-183	13%
184-186	14%
187-189	15%
190-192	16%
193-194	17%
195-197	18%
198-199	19%
200+	20%

Greed Donation Machine Rewards [ ]

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Greed Donation Machine Tricks [ ]

• Here are a few ways to drastically shorten the time spent on Greed mode by allowing the player to donate as many coins as possible in a single run.

Infinite Money [ ]

Via the 2 of Diamonds [ ]

1. Acquire a 2 of Diamonds card and Blank Card (which must be unlocked first).
2. Find a Lil' Battery for sale. At least 11 or 21 coins are needed to exploit the 2 of Diamonds card.
3. Use the Blank Card to double your money then buy the Lil' Battery to recharge the Blank Card. You need to buy 2 lil' Batteries because of recharge time 12 rooms instead of 4 rooms (see the Blank Card page); Butter! makes Blank Card revert back to a 4 room charge, making the process as how it was before Repentance. Restock will cause the Lil' Battery to constantly be restocking in the Shop. This allows Isaac to generate an infinite amount of money.
4. Rune of Jera can likewise be exploited in the same manner with coins on the ground and can duplicate Lil' Batteries in the shop for ease of exploitation. See Clear Rune (must be unlocked)

This method can be used to quickly gain the Chaos Card as well:

• Use a Deck of Cards and buy Lil' Batteries until you draw a Chaos Card.
  • Make sure your coin count does not drop below 11 while doing this!

Via Head of the Keeper [ ]

Via the D20 [ ]

This is an easy method since the D20 is quite common in the Greed Shop pool.

• Buy the D20.
• Kill an entire floor without picking up money.
• Restock the Shop until a Lil' Battery is present.
• Reroll the money. (DON'T TOUCH ANYTHING YET!)
• Buy the Lil' Battery.
• Open all the chests.
• If you don't already have at least 5 cents, pick up coins until you have at least 5 cents.
• Reroll and repeat the process.
• This method is less viable in Repentance, since empty chests no longer can be rerolled.

After a couple of rerolls, you will have 99 of all consumables. This is improved by also having Mom's Key, as you will also get a lot of items from Locked Chests.

Via Swallowed Penny or Piggy Bank [ ]

• Acquire the Swallowed Penny or Piggy Bank.
• Acquire any method to regenerate health: Pyromaniac with sufficient/infinite bombs (with sufficient bombs, there's high probability you'll manage to find any number of combos to continue anyway), Bloody Penny, Scapular, Habit with any number of consumable-spawning items, etc.
• Alternatively, acquire Humbling Bundle, which makes you drop more coins than it costs to heal, Steam Sale, which lowers the margin on healing, or Maggy's Bow, which would heal you for more.
• Take damage, collect coins and health, repeat as required.
• Be careful not to get damage-prevention effects when doing this: Holy Mantle prevents the curse room from damaging you for this purpose, Mom transformation tend to destroy fires if you aren't careful, Pyromaniac prevents you from using bombs for self-damage, Flying prevents you from taking damage from spikes, etc.
• BUT, keep in mind you can always stand in the doorway of a curse room to take damage without exiting the current room (if you have flight this will only work when you stand in the door way from inside the curse room). The spikes can be removed with Flat File, so be cautious.

Via IV Bag [ ]

Notes on Farming Methods [ ]

• Avoid the following items whenever possible:
• Resetting the Ultra Greed fight many times may cause a bug that strips you of all your items. When this happens, close the program via Task Manager. DO NOT use the Hour Glass or exit the game normally. If you do, the game will save your progress and you will be permanently stripped of your items.
• Be extremely careful when the giant chest spawns since touching it (either by walking into it or being knocked into it by an explosive blast) will immediately end your run.
• Spread your runs out across multiple characters.
  • Since the Greed Donation Machine's chance of jamming is character-specific it's a good idea to play multiple characters to decrease the chance of the Greed Donation Machine jamming. If you're having a hard time with the above methods or just don't want to do them, switch characters when you notice the Greed Donation Machine starts jamming regularly on you. Excluding The Lost and the Keeper, if you can, on average, donate 50 coins a run to the Greed Donation Machine, only doing two wins a character, you should be done in 20 wins.

Glowing Hour Glass Method [ ]

Methods based on Glowing Hour Glass work only in Afterbirth and have been patched in later DLCs.

This method centers around the fact that the Greed Donation Machine is unjammed every time Ultra Greed is killed but the coin count doesn't reset after the Glowing Hour Glass is used. In order to make this possible, you will need some way to recharge your spacebar item, since you will only get one recharge every time you kill Ultra Greed. This is also a very good method to farm as many Eden tokens as you want, as one token will be granted for each Ultra Greed kill.

1. Buy the Glowing Hour Glass.
2. The fight with Ultra Greed has to be started with a fully charged Glowing Hour Glass.

From here is where you can start donating infinitely:

1. Kill Ultra Greed. If the battle looks like a loss, the Glowing Hour Glass can be used once to reset the fight, but the next time Ultra Greed has to be defeated in order to keep the combo up.
   • A double-charged Hour Glass with The Battery allows infinite uses of the Hour Glass, allowing you to reset as much as you want any time.
2. Donate money to the Greed Donation Machine until the machine jams.
3. Use the Glowing Hour Glass to reset back to the room before Ultra Greed.

Acquiring the Chaos Card [ ]

The Chaos Card (if unlocked already) will allow the player to instantly kill Ultra Greed, cutting a large amount of time otherwise needed to defeat him.

• Keep buying cards from the shop until a Chaos Card shows up.
• Use a Deck of Cards and buy Batteries until you draw a Chaos Card.
  • Any Lil' Batteries and Battery Items will further increase the effectiveness of the Deck of Cards.

Faster alternative method using the 0 - The Fool card [ ]

• Acquire an infinite Glowing Hour Glass (such as by using The Battery, Habit with any form of self-damage, Glitter Bombs, or the 48 Hour Energy pill), but bring 0 - The Fool card instead of the Chaos Card.
• Kill Greed once, then run near the bottom of the room to spawn the machine by where the door was, but do NOT donate to the machine.
• Use 0 - The Fool card, re-enter the Boss Room, Greed will be dead but the machine will still be there, donate to the machine until it breaks.
• Use The Glowing Hourglass, re-enter the room, donate again. Repeat.

Via Smart Fly/Any Chasing Familiar

• Buy any chasing familiar. Smart Fly is most useful due to its increased damage per tick and faster movement speed.
• During the Ultra Greed Fight, send the chasing familiar after Ultra Greed. (Note: you must be hit at least once before Smart Fly is activated.)
• As Ultra Greed begins spawning, kill as little enemies as required to get Ultra Greed to stay in his defensive stance. The goal here is to get Ultra Greed into his defensive stance while your chasing familiar attacks him. As soon as this is achieved, run around to avoid killing/being killed by the remaining mobs.
• Continue to avoid attacking monsters until your familiar kills Ultra Greed.
• Repeat if monsters are killed by accident and Ultra Greed breaks out of his defensive stance.
• Testing reveals the lowest number of monsters to be around 5 or 6.

Force Quit Method [ ]

Switch This method only applies to the cartridge Switch version, others have been patched.

The Force Quit method is an easy way to fill up the Greed Donation Machine. It follows the same exploit as the Donation Machine. The game saves the Greed and Donation Machine data separately from your main save file; the Machine data is only changed and saved AFTER you leave the room. Requisite is any item or card that allows you to teleport outside the Boss Room. There is no need for Glowing Hour Glass, Blank Card, or ? Card for this method as you can reset your items and keep the coin count going higher.

• Defeat Ultra Greed(ier).
• After the Greed Donation Machine appears, exit to the start menu normally to save your game.
• Continue the game.
• Donate money until machine jams or you run out of coins.
• Teleport outside the room. Now the game will save the change in coins only.
• Force quit the game
  • Nintendo Switch: eject and reinsert the cartridge
• Restart and continue the game. Your save game from the 2nd step will be restored. It should look the same as before: Greed Donation Machine is unjammed and your teleport item/card is still there, except the starting coin count on the Greed Donation Machine is now higher.
• Donate money. Teleport. Force Quit. Repeat.
• Note: The Force Quit Method has been patched except for the cartridge on Nintendo Switch. The Greed Donation Machine will no longer be there when you return to the game after force quitting, neither will the item/card, which you used to teleport with.

Trivia [ ]

• Due to a bug, the Greed Donation Machine could initially only hold a maximum of 109 coins, blowing up whenever another coin was inserted. However, this was fixed in a later update.
  • The number 109 was later incorporated into the ARG that lead to the addition of The Keeper.

Greed Donation Machine Unlocks

The Binding of Isaac: Rebirth
Achievements Challenges Completion Marks Items Trinkets Characters Chapters Rooms Transformations Attributes Bosses Monsters Pickups Modes Curses Objects Seeds Effects Endings Collection • Item Pools • Version History • Modding • Music

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Source: https://bindingofisaacrebirth.fandom.com/wiki/Greed_Donation_Machine

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