One game that I want to buy on gog but have paused on is Wreckreation (Dangerous Driving 2 aka 'Burnout reborn'), as the gog version doesn't have any multiplayer, while the steam version does. This is a big deal since the entire 'spin' in this follow-up is 'make tracks, jumps, stunts, and havoc with your friends in real-time, involving the game world at ground level or the open space sky-high'. Up until recently the gog page listed multiplayer as a feature, even though reviews and forum posts say that is not true.

Though Dangerous Driving 1 promised to release on Steam (promotional materials, videos, website...), then bent over and took a cash enema from Daddy Epic, and never released on steam at all. So I might just pirate Wreckreation too, because they clearly want profits over what their users want (honesty, choice, transparency, and equal treatment).