Viewing Mod
Eevee is a new adorable character with 5 available eeveelutions!
Created 3 months ago

It's Eevee!

Isaac's Mom is closing in as he finds a trapdoor to the Basement, hidden under his rug. Too terrified to risk surviving the fall or breaking his precious legs, he sends his trusty Pokémon, Eevee, down to kill Mom for him.

(If you decide to make a video on my mod, I kindly ask that you leave a link to the mod in the description. Thanks!)


  • A New Character: Eevee!
  • Eevee's Speed is naturally higher, and they make use of their signature move: Swift! It isn't perfect though, as it doesn't have it's 100% chance to hit. Do the aiming yourself!
  • Damage is doubled but tears are halved.
  • Eevee has the special ability to evolve based on their surroundings, so picking up stones with magical energy imbued inside is just enough to drastically change his entire body and abilities. Find them at your local shop or in a secret cave!


  • Grab a Fire Stone to evolve into Flareon: a fiery evolution of Eevee with damaging capabilities. Evolve via the Fire Stone item.
  • Gain 1 Full Red Heart
  • Your Fireball burns anything it touches. Unlike Fire Mind, it doesn't explode in your face and the burn lasts much longer.
  • You also have a 20% chance for your Fireballs to leave behind a heated fire!


  • Grap a Water Sstone to evolve into Vaporeon: an aquatic evoltuion of Eevee with more defensive approaches.Evolve via the Water Stone item.
  • Unlike the other evolutions that have you gain you 1 full red heart, you gain 2!
  • Your Bubble attack leaves behind a small damaging puddle of water.
  • Your Bubbles have a 10% chance to contain extra water, splashing into a much bigger puddle of water that deals more damage!


  • Grab a Thunder Stone to evolve into Jolteon: an electrifying evolution of Eevee with a fast-based set.
  • Aside from a Health up, your Speed and Tears go up, but your Damage goes down!
  • You decided Swift is too slow so you use your own electrified needles to dish out quick damage.
  • Your needles [strike] are just a Jacob's Ladder effect [/strike] send electricity through multiple enemies, which is good for crowd control!

Happiness System
By collecting many items in the game and coins, or playing the thumbs up animation, you gain happiness. View your happiness by expanding the map. Once maxed (you'll see a cross and reverse cross as the emoticon), head to an Angel or Devil room and claim Umbreon/Espeon respectively.


  • Upon gaining max happiness, head to the Devil Room and touch the beam of light to evolve into Umbreon: a dark and sinister evolution of Eevee who prefers to use specialized defense.
  • Gain 1 red heart and a black heart!
  • Use a charged side-attack similar to Maw of the Void and unleash Dark Pulse: A horrible aura imbued with dark thoughts. Will knockback enemies and bullets alongside instilling fear into enemies!


  • Upon gaining max happiness, head to the Angel Room and touch the beam of light to evolve into Espeon: a psychic and calm-minded evolution of Eevee who prefers to use specialized attack.
  • Gain 1 red heart and a soul heart!
  • Use a charged side-attack similar to Maw of the Void and put down a Light Screen: A wonderous wall of light that will reflect any bullets and add homing onto them!

Planned Features:

  • Implementing the rest of the Eeveelutions
  • A unique death animation (it would probably just get rid of the Isaac ghost)
  • Adding unique costumes to Eevee and the Eeveelutions for any popular items (Brimstone, Monstro's Lung, Ludo, Tech 1 and 2, Godhead, etc)
  • True Co-Op Support, as the code is currently written to only detect 1 player (Suspended till Repentance)
  • A mysterious 9th Eeveelution unique to this mod!
  • Items that would have you gain each Eeveelutions' unique effects while playing as characters besides Eevee

Currently Being Worked On:

  • Giving every eeveelution unique tear sprites and/or tear sfx
  • Fixing many bugs from the Umbreon&Espeon update

Known Issues:

  • If you pick up Burning Bush while playing as Eevee, you don't shoot out anything, and so you deal 0 damage. (Unknown as to how to fix)
  • Vitamin A does not give you health as other characters. Only works on Eevee (Fixed. Will be in next update.)
  • Items that apply costumes such as The Nail, I Found Pills, Puberty, etc do not go away upon use. Resets upon picking up an item. (Will be fixed soon)
  • Vitamin stats are not programmed correctly. Need to be redone.
  • Umbreon is supposed to have markings on their feet, but I forgot to put it on for its body costume. Fixed in the next update.
  • You cannot view the Happiness emoticon through controllers. (Fixed. Will be in the next update)

With all that out the way, thank you to everyone who has supported this mod! Some special thanks are described in the main.lua. Please go ahead and leave ideas for Leafeon, Glaceon, and Sylveon or report bugs in the comments below!

This mod is also available on the Steam Workshop:


x 16

- Bug Fixes:

- Fixed the Fire, Water, and Thunder Stones showing up in runs with characters other than Eevee.

- Fixed the faint sound effect not playing

- Changes:

- Made the sfx for taking damage and dying replace the original sounds much more frequently. This means less instances of hearing the original sound.

- [/list]

- 2 New evolutions: Espeon and Umbreon. Increase your happiness through various means (which can be tracked by holding the map button. TAB by default) and head to either the Angel or Devil room to touch a beam of light and evolve into the appropiate evolution.

- Vitamins that increase your stats! There's one for every stat. Find them in the treasure room or the shop.

- Flight costumes! No longer shall you walk in the air. Don a modified version of the Sky Dash vehicle from Let's Go Eevee upon picking up any flight items.

- Shinies! You have a 1/10 chance to start a run as shiny. This also affects the evolutions too, and even the flight costumes!

- DEBUG ITEMS! Type "g gain" or "g remove" in the debug console in order to change what eeveelution you are and if you are shiny or not.

- All main head sprites have been modified. More specifically the nose has been made smaller and ears are more detailed and closer together.

- The way evolution works have been changed and now extremely streamlined. It's now truly impossible for you to evolve into any eeveelution if you are already one (with the exception of the debug items, which force it)

- Evolution stones SHOULD now show up 3x as much in all item pools! You're welcome.

can you make it a .zip file? i can't open .rar files... and if you can't do that, can someone tell me how to open a .rar file for a mod? (i'm 12 btw)
very cool
I like how all chracters are balanced and fun to play
June 5, 2018 - 1 year ago

The download button will now give additional details and link to a helpful announcement when you have not been verified as owning the game.