Arcade	Donkey Kong Foundry Why, oh, why wouldn't they put a freeplay mode in Donkey Kong?  Man, this was seriously missing.  And who wants to keep flicking that coin chute?  Finally, no quarters on a string, no straw stuck in the coin door, no pop bottles under the buttons.  Freeplay with a ROM swap.  Say no more.
Donkey Kong Foundry ROMs feature:

• The INSERT COINS message and Coin(s) per Credit(s) info is removed from the Attract Mode
• Shows FREEPLAY in place of CREDITS, so you know it's in Freeplay
• Walk up to game and press 1- or 2-Player start, no need for coins
• Attract mode runs, game will not freeze on the Press 1 or 2 player screen
• New Freeplay mode replaces 5 Coins/1 Credit mode (like anyone used this)
• Includes new level:      The Foundry 

Learn about the Foundry

Hardware Compatibility
Donkey Kong Foundry works with both the 2- and 4-board versions.

Programmable Multi-Game JAMMA PCB	Brasington HS Kit

And check out D2K!