Really bad variant idea :
-Harvest game ever-
In this game, each player starts with 6 coppers, 1 harvest and the 3 shelters (or, even more ridiculous, 3 estates instead) and the ONLY way to generate $s in the game is by playing Harvest (which is assumed to be in the kingdom, otherwise...)
Rules :
-Action cards other than Harvest that provide $s directly (Festival) or indirectly (by option - Pawn/Minion, or by tribute - Secret Chamber/Salvager/Tribute...) have their +$s effects ignored (you still may choose "+$2" on Minion : nothing will happen).
-reduction-costs effects (bridge, highway ...) are ignored as well. Please note that if you play 5 highways and then trash a $5 card with Apprentice, you still draw 5 cards.
-Idem for action cards
-Though gainers (actions, or Horn of Plenty...) still make you gain cards.
-Potions cards still generate potions
-If you play several times Harvest with TR/KC/procession, you'll gain $s each time.
At first I wanted to post this in the puzzle thread but... no ! I'm too lazy to find by myself which is the fastest way to empty the Provinces (and even lazier for Colonies (and even lazier for the Megaturn variant)) !