Building comparison
head to head
Sunless SeavsTharsis
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Sunless Sea
Variance · Systems & Chaos
A gothic exploration roguelike about sailing an underground ocean, trading terror for stories and profit.
Tharsis
Variance · Systems & Chaos
Tests probability management as dice rolls repeatedly threaten a doomed Mars mission.
Sunless Sea leans Variance (Systems & Chaos); Tharsis leans Variance (Systems & Chaos).
Sunless SeaTharsis
Axis by axis
Execution1 vs 0
Sunless Sea leans a little harder on execution, though the gap is small.
Sunless Sea
Slow boat combat barely tests the hands
Tharsis
Assigning dice needs no dexterity
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sunless Sea
Horrors are scripted or random, never adaptive
Tharsis
Disasters are random events, not an adapting mind
Variance7 vs 8
Tharsis leans a little harder on variance, though the gap is small.
Sunless Sea
Hidden map, random events and unknown story branches dominate
Tharsis
Dice rolls and event draws brutally dominate each turn
Optimization6 vs 7
Tharsis leans a little harder on optimization, though the gap is small.
Sunless Sea
Trade routes and fuel math converge once mapped
Tharsis
Crew allocation and risk math are the counterplay
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.