Reddit user pintoscope compiled a list of the best and worst wards in Dota 2. He conducted research based on 426 professional matches. The author highlighted successful ward areas in green and failed ones in red.
In the comments under his post, users also suggested that pintoscope analyze the performance of offensive and defensive wards for both sides. Pintoscope expressed that he will try to do this in the future.
Earlier, Team Spirit streamer Kamil "Koma`" Biktimirov named a hero that can cause problems for a team without wards. According to him, it is Nyx Assassin, a character capable of baiting opponents on wards to create space for his teammates.