Walmart takes up to 80% off a selection of game room essentials. Opt for in-store pickup to avoid shipping charges, which start at $5.99. (Most items over $35 receive free shipping; larger items may incur surcharges.) A couple of best bets:

MD Sports Easy Assembly 48" Air Powered Hockey Table for $18.90 + pickup ($11 low)

EastPoint Sports 15mm Top Fold 'N Store Table Tennis Table for $100 + $0 s&h (pictured, $24 low)