Donkey Kong Junior Remix Multigame Free Play and High Score Save Kit with Trainer
Product information "Donkey Kong Junior Remix Multigame Free Play and High Score Save Kit with Trainer"
John Kowalski Donkey Kong Jr. Remix Multigame Kit with Trainer
Expand a compatible original Nintendo Donkey Kong Jr. arcade PCB with original Donkey Kong Jr., Donkey Kong Jr. Remix, and a dedicated Trainer Mode. The kit also adds Free Play, configurable high score saving, gameplay-speed controls, stage-selection tools, and detailed scoring information.
Donkey Kong Jr. Remix was created by John Kowalski. It adds new stages, bonus stages, enemies, attack items, gameplay variations, and a level 22 kill screen while retaining access to the original Donkey Kong Jr. game.
Select Donkey Kong Jr., Donkey Kong Jr. Remix, or Trainer Mode.
Adds seven new stages, four bonus stages, new enemies, and new attack items.
Restart or skip stages, change game speed, and review detailed scoring data.
Configure Free Play and choose how high scores are retained.
Donkey Kong Jr. Remix Game and Mode List
- Donkey Kong Jr.: Play the original game using the supported original PCB program ROMs.
- Donkey Kong Jr. Remix: Play new stages, bonus stages, enemy variations, attack items, and later-level challenges created for the Remix version.
- Trainer Mode: Practice stages with restart, stage-skip, speed-control, pace, and scoring-analysis tools.
Hold the Jump button during attract mode to switch between Junior, Remix, and Trainer. A preferred default boot mode can also be selected.
Donkey Kong Jr. Remix Features
- Seven New Stages: Adds seven newly designed stages alongside the original Donkey Kong Jr. stage designs.
- Four New Bonus Stages: Adds four additional bonus-stage challenges.
- Later-Level Variations: Later stages include additional gameplay variations and increased challenge.
- New Attack Items: Introduces umbrellas, pies, and light bulbs as new attack items.
- New Snapjaw Variations: Adds Snapjaw types with different abilities and behavior.
- Level 22 Kill Screen: Donkey Kong Jr. Remix includes a dedicated kill screen at level 22.
- Expanded Level Display: The level indicator correctly displays levels above 9.
- Classic Mode: Plays the original Donkey Kong Jr. stages through the Remix engine with documented fixes for issues such as control lag and springboard behavior.
- Original-ROM Option: The original Donkey Kong Jr. game can also run from the supported program ROMs on the original arcade PCB.
Trainer Mode Features
- Level 4 Start: Begin a Trainer Mode game at level 4.
- Restart Stage: Restart the current stage using the documented trainer control.
- Skip Stage: Advance to the next stage without completing the current screen.
- Adjustable Game Speed: Select speeds from 0% through 100% in 10% increments.
- Pace Calculator: Review pace information and per-screen point totals during practice.
- Jump-Point Display: View the jump points earned during each stage.
- Fruit-Point Display: View the fruit points earned during each stage.
- Real-Time Scoring Analysis: Use the trainer displays to evaluate scoring and stage performance.
Free Play, High Score Saving, and Settings
- Free Play: Enable coin-free operation while retaining standard coin play.
- Configurable High Score Saving: Choose to save all supported scores, save only first place, or disable score saving.
- Default Boot Selection: Choose Junior, Remix, or Trainer as the mode displayed after startup.
- Separate Game Settings: Maintain separate supported DIP-switch settings for original Donkey Kong Jr. and Donkey Kong Jr. Remix.
- Attract-Mode Selection: Hold the Jump button during attract mode to move between Junior, Remix, and Trainer.
Product Scope
This product is the John Kowalski Donkey Kong Jr. Remix Multigame Kit with Trainer. It is intended for players who want new Remix content and extensive practice tools in addition to the original Donkey Kong Jr. game.
It is separate from the standard HighScoreSaves Donkey Kong Jr. kit, the standard Braze Donkey Kong Jr. kit, and the Donkey Kong Rearranged 3DKJr Multigame configuration.
Hardware Compatibility
- Supported Board Sets: Documented for compatible U.S., Japanese, and most bootleg Donkey Kong Jr. arcade PCBs
- Processor Compatibility: Compatible Z80-family processor, including documented NEC D780C installations
- CPU Socket Requirement: The processor must be installed in a compatible 40-pin socket
- Original Game Support: Runs supported original PCB Donkey Kong Jr. program ROMs when selected
- Cabinet Access: Access to the arcade PCB is required during installation
- Compatibility Check: Review the installation guide before ordering, especially when using a bootleg or uncommon board revision
Important CPU Socket Note
This kit requires a compatible socketed processor. If the Z80 or compatible NEC D780C processor is soldered directly to the arcade PCB, a qualified arcade technician must remove it and install a compatible 40-pin socket before the kit can be used.
Installation Requirements
- Installation Difficulty: Easy when the processor is already socketed
- Soldering Required: No, when the processor is already installed in a compatible socket
- If the Processor Is Soldered: A qualified arcade technician must install a compatible 40-pin socket before the kit can be used
- Installation Process: The original processor is removed from the arcade PCB, installed on the Remix daughterboard, and the assembled daughterboard is inserted into the vacated processor socket
- Installation Guide: Download the Donkey Kong Jr. Remix Installation Guide PDF
Installation Overview
- Turn off and unplug the arcade cabinet before accessing the Donkey Kong Jr. arcade PCB.
- Confirm that the Z80 or compatible processor is installed in a supported 40-pin socket.
- Carefully remove the processor from the original arcade PCB.
- Install the processor into the socket on the Remix daughterboard, observing the documented Pin 1 orientation.
- Install the assembled daughterboard into the vacated processor socket on the original arcade board.
- Confirm all processor and daughterboard orientations before restoring cabinet power.
- Power on the cabinet and verify operation using the installation guide.
Donkey Kong Jr. Remix Kit FAQ
Who created Donkey Kong Jr. Remix?
Donkey Kong Jr. Remix was created by John Kowalski.
Which games and modes are included?
The kit includes original Donkey Kong Jr., Donkey Kong Jr. Remix, and a dedicated Trainer Mode.
What new content does Donkey Kong Jr. Remix add?
Remix adds seven new stages, four bonus stages, new Snapjaw variations, umbrellas, pies, light bulbs, later-stage variations, and a level 22 kill screen.
Is the original Donkey Kong Jr. game still playable?
Yes. The original game can be played using the supported original PCB program ROMs. Classic stages can also be played through the Remix engine with its documented fixes.
What does Trainer Mode provide?
Trainer Mode supports stage restarting, stage skipping, adjustable speed, pace calculations, per-screen totals, and displays for jump and fruit points.
How is game speed adjusted?
Trainer Mode allows speed selection from 0% through 100% in 10% increments.
How do I switch between Junior, Remix, and Trainer?
Hold the Jump button during attract mode to switch between the three available options.
Can I choose which mode starts automatically?
Yes. Junior, Remix, or Trainer can be selected as the default boot mode.
Does the kit save high scores?
Yes. The settings allow all supported scores to be saved, only first place to be saved, or score saving to be disabled.
Does the kit support Free Play and coin operation?
Yes. Free Play can be enabled while normal coin operation remains available.
Which arcade PCBs are supported?
The kit is documented for compatible U.S., Japanese, and most bootleg Donkey Kong Jr. board sets, including supported boards using the NEC D780C processor.
Does installation require a socketed processor?
Yes. If the processor is soldered directly to the PCB, a qualified arcade technician must install a compatible 40-pin socket first.
Where can I download the installation guide?
Donkey Kong Jr. Remix Kit Resources
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1 review
October 19, 2025 3:07 PM
Donkey Kong Jr Remix
Great addition to any DKJR for free play, high score saves, and the additional games! Don’t forget to check out the Ultimate 3DK kit. I eventually upgraded my DK to the 3DK kit on release day and sold my DKJR & DK3. Worth every penny!