head to head
Unturned asks more than Clubhouse Games: 51 Worldwide Classics, and the gap is execution.

Reads · Bluff & Deduction
Collection of 51 classic tabletop and parlor games spanning every skill mix.

Optimization · Practiced Mastery
A blocky free-to-play zombie survival sandbox mixing scavenging, basebuilding, and PvP.
Clubhouse Games: 51 Worldwide Classics leans Reads (Bluff & Deduction); Unturned leans Optimization (Practiced Mastery).
Unturned leans clearly harder on execution.
Clubhouse Games: 51 Worldwide Classics
A few dexterity games like toy baseball
Unturned
Gunfights and driving reward aim and control
Clubhouse Games: 51 Worldwide Classics leans a little harder on reads, though the gap is small.
Clubhouse Games: 51 Worldwide Classics
Many classics hinge on human opponents
Unturned
Human raiders and ambushes on PvP servers
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Clubhouse Games: 51 Worldwide Classics
Card and dice games carry hidden information
Unturned
Loot spawns and unknown player positions
Unturned leans a little harder on optimization, though the gap is small.
Clubhouse Games: 51 Worldwide Classics
Chess, checkers, and mancala reward calculation
Unturned
Base building, loot routes, and crafting economy
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.