Rust was able to go upstairs. Rust allows you to play as a person in a multiplayer world & do as you will to survive and kill others. Its not the hardest of games but might require some tutorials.

Starbound was able to go upstairs. Starbound allows you to play as a person & advance your character from adventuring & exploring. Its like an upgraded version of terraria with a lot of free roam.

CSGO was able to go upstairs. CSGO is a free fps game that allows you to play with friends and random people. Real life money doesn't effect your experience but actual skill does. Real Money = Clout.

Garry's Mod was able to go upstairs. Garry's Mod allows you to do whatever you'd like with other people & its like an updated version of Roblox.

CK2 was able to go upstairs. Crusader Kings 2 allows you to play as any nation (with dlcs) & do whatever you desire; but the game is very complicated to most people & might require video tutorials.

Fallout 4 was able to go upstairs. Fallout 4 allows you to play as a person in a post-apocalyptic civilization with a lot of free roam. You can become evil or you can become a gentleman in Fallout 4.

HOI4 was able to go upstairs. Hearts of Iron 4 allows you to play as any nation in the World War 2 period & turn your nation into one of your likings; bring back the kaiserreich, & Etc. Mods are good.

It was able to go upstairs. Mount & Blade 2: Bannerlord allows you to play as a character & pretty much do whatever you'd like. A lot of customization & a lot of free roam.

EU4 was able to go upstairs. EU4 is a good game, it allows you to play as a nation in history & change history as the nation.