For a start, Epic is holding a 12 days of free games promotion, giving away another free title every day. The first one, Into the Breach, is live now – but you’ll have to be quick, since the promotions only last for 24 hours each.
Aside from that, anyone and everyone can grab a free $10 / £10 coupon from the Epic Store right now. If you use that voucher on any eligible title (anything costing more than $15 / £14 that isn’t a season pass, pre-order, in-game purchase, or DLC), you’ll be given another $10 / £10 voucher. There’s no limit on this, so you’ll keep getting coupons every time you buy an eligible title in the sale period.
There’s also the small matter of the promotions themselves. Borderlands 3, for example, is available at a 35% discount, while Control is 33% off. Other recent games, like The Outer Worlds (25% off), Star Wars Jedi: Fallen Order (17%), and Red Dead Redemption 2 (20%) are also discounted.