1-4 1-4 3
60-90 minutes
Medium
2-4 2-4
60 minutes
2-4 2-4 4
1-5 1-5
Low
Jules Vernes Parallelwelt-Paradoxon
1-6 1-6
90-150 minutes
Simple
3-6 3-6
15 minutes
Einstein's Relativity Crisis
1-6 1-3 2
90-120 minutes
2 2
30 minutes
Da Vinci's Universal Dilemma