www.isthereanydeal.com has just alerted me to a DTG March Madness sale with 25-80% off 3pm 7th March to 3pm 18th March https://forums.dovetailgames.com/threads/march-madness-sale-now-live.15261/ The next major sale is normally the Steam Summer Sale around June 23rd https://www.whenisthenextsteamsale.com/