head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Reads · Competitive PvP
A browser arena where your cell eats smaller players and flees bigger ones.

Reads · Pure Mind Games
A split-screen trap duel testing prediction of where your human rival hid the bombs.
Agar.io leans Reads (Competitive PvP); Spy vs Spy leans Reads (Pure Mind Games).
Agar.io leans a little harder on execution, though the gap is small.
Agar.io
Mouse steering and split timing
Spy vs Spy
Simple movement and item fiddling under time pressure
Spy vs Spy leans a little harder on reads, though the gap is small.
Agar.io
Baiting and predicting human blobs decides fights
Spy vs Spy
Guessing where the rival spy laid traps is the core duel
Spy vs Spy leans a little harder on variance, though the gap is small.
Agar.io
Spawn locations and lobby makeup random
Spy vs Spy
Item locations are hidden information each round
Spy vs Spy leans a little harder on optimization, though the gap is small.
Agar.io
Split-merge math is shallow but real
Spy vs Spy
Trap-and-counter knowledge forms a learnable layer
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.