Steam summer sale has begun.
All OMSI DLCs and base game (except later ones like eBus and Bad Hügelsdorf) are 30% off.
Euro Truck Simulator 2 and American Truck Simulator are 75% off. All released DLCs are 30 - 70% off (even latest Black Sea and Utah DLCs are -30%).
No Discounts for LOTUS which is understandable as Early Access titles usually don't have discount.