Idle Fill Factory 4: Events Home Idle Fill Factory 4: Events 0.0 / 5 ( 0 votes ) Your Rating? Discover Idle Fill Factory 4: Events – Play Free Now on GameHard! Idle Fill Factory 4: Events - idle factory game, upgrade your factory to earn more money and unlock new products as you increase production. Sell your products and buy new conveyors and improve the production speed for your factory. You can buy another factory to increase your money. Categories in which Idle Fill Factory 4: Events is included: .io Action Arcade Mini 1 Player