Ultimate Ski Jumping 2020 is an old-school sports simulation where players control a ski jumper. The game includes a Campaign mode with a narrative, Tournaments on specific hills, Quickplay for customizable matches, online Multiplayer, and a Training mode. Players can personalize their competitors with unlockable gear. Jumps can be performed on various hills, including summer locations and the Moon, utilizing either simplified or advanced jump models.

The game offers five AI difficulty levels and allows for global online competition. Competitors can be customized with new helmets, gloves, suits, boots, and skis. The visual presentation adopts an old-school aesthetic.