Selling three prototypes from my collection.
All are US versions, and all were dumped and confirmed to be either the final or near-final versions. They are the following:
-Arrow Flash (Genesis)
-Gain Ground (Genesis)
-Super Battletank 2 (SNES)
I'm not terribly fond of these games myself, and whoever would still buy a prototype after it's been dumped, let me know and PM me with offers. The Genesis ones are the same as the Alt dumps in the GoodSet, so likely just an earlier revision on a development cartridge or something. I don't expect to get much, so send your offers my way.