Sour Crystal

This is a custom Pokémon game based on the Pokémon Crystal disassembly.

Its goal is not to change, but build upon the original game with many bug fixes, graphical tweaks and quality of life changes. In addition, features have been visually altered to make better use of the GBC's stronger hardware.

What’s New in v7.0:

Updates:

• The Pokegear's PHONE contact list has been extended to hold all 50 contacts at once.
• Incoming phone calls from other trainers can now be 'Answered' or Declined' at will.
• When a Fire-type is in your party, EGGs will now hatch twice as fast. This effect does not stack if you have more than one Fire-type in your party.
• The UNOWN dex has been redesigned to better keep track of the different forms of UNOWN the player has.
• A new 'FORM' mode has been added to the Pokedex that will allow you to check a Pokemon's front and back sprites as well as their animation, shiny colors, and party icon.
• The PRINT function for the Pokedex has been removed.
• Added a Shiny Charm to the game which doubles your chance of finding a shiny in the wild. This effect also applies to swarms.
• Harsh Sunlight weather can now occur in the overworld, just like Rain. However, it cannot be active at NITE.
• Players now have unique sprites for surfing.
• Players can now FISH while surfing.
• An NPC has been added to Mt.Mortar to inform the player that fossils can be found there.
• When teaching a move via TM/HM or tutor, Pokemon that know the move already will display 'LEARNED' on the party screen.
• Updated the sprites for the following Pokemon:
  • Charmeleon (front + animated)
  • Pidgeotto (back)
  • Arbok (back)
  • Slowbro (shiny palette)
  • Koffing (back)
  • Magmar (palette)
  • Umbreon (front)
  • Kingdra (front + animated)

Bugfixes:

• The Game will no longer crash if you attempt to buy Moomoo Milk without having enough money.
• When Future Sight deals damage, the textbox will now correctly state if the damage was Super/Not Very Effective or a Critical Hit.
• The Player's HP bar will no longer be hidden at the start of battle when there is an active weather in the overworld.
• Rain splashes will no longer pile up at the bottom of the screen if the player walks south during rainy weather.

Features:

• New Custom Pokémon Sprites done by me. Over 200 have been tweaked/redone
• A Challenge Mode System which can be set during a New Game
• A fully-functioning Safari Zone with 4 custom Biomes to explore
• Functional overworld Weather
• Unique Party sprites
• Updated Stats up to gen7
• Updated Move properties: Base Power, Accuracy, effects, etc
• Updated Movepools
• Upgraded trainer rematch system to make grinding more enjoyable and rewarding
• Expanded Phone Contacts which can hold all 50 contacts at once
• A complete overhaul of the PC Box which now functions like Gen3. No more saving between boxes required
• Some post-game Pokémon are now available in Johto such as Houndour and Slugma
• Upgraded battle color system for more dynamic attack animations
• Updated attack animations for many moves
• All 251 Pokémon obtainable
• Instant Apricorn Balls
• Visible Berries and Apricorns on the overworld. Each tree respawns at 12:00am each day
• A Berry Pocket to reduce your main pocket from getting full
• A new Pager system that removes the need for HM slaves. HMs can still be used like the original games, the Pager functions as a backup if needed.
• Reusable TMs
• The Ghost-Type is now special and the Dark-Type and Dragon-Type are now Physical
• A new Swarm system with more than 95 different swarms. Swarming Pokémon now have an increased chance of being shiny
• Almost all bugs from gen2 have been fixed.
• Kanto has been restored to its gen1 size including some cut areas
• Kanto now has Headbutt trees
• All HGSS-exclusive routes and trainers have been ported
• Trade Evolutions can now also be obtained by using a new item called the Linking Cord or by simply using the item required for trading on the Pokémon. (King’s Rock, Metal Coat, etc.)
• A Move Reminder
• Postgame Gym Leader Rematches and E4 Round 2 can be triggered after defeating Red for the first time.
• And many other small goodies to find!

Screenshots:

Credits:

Codework:

• FIQ for various ASM work, and the dynamic battle palette system
• Vulcandth for various ASM work, and for porting the 'newbox PC system as well as Overworld weather
• Rangi42 for various ASM work and being a huge inspiration
• Zumi for various ASM work and bugfixing
• Pfero for various ASM and bugfixing
• Luna for assisting with the Safari Zone code

Music:

• CoralDev for the new Kanto trainer battle music
• Mmmmmm for various music covers
• FroggestSpirit for various music covers

Special Thanks:

• yenatch, kanzure, Pikalax, iimarckus, and everyone else who's contributed to disassembling Pokémon Crystal.
• APE-AHAB, GMERC, for various feedback and critique
• All my discord members who contributed to bug-testing and all who gave me support
• Satoshi Tajiri, Game Freak, and Nintendo for creating Pokémon Crystal in the first place.

Additional Resources:

• Discord Server
• Save Editor
• Documentation