Based on 4 reported problems, Gameskraft interviews are significantly harder than average - 100% Hard vs 18% across all companies.
Compared to the industry average, Gameskraft puts unusual emphasis on heap-priority-queue (50% of problems, 8.2x the industry average), sorting (50% of problems, 3.4x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are sorting (50%), array (50%), heap-priority-queue (50%), tree (25%). Problems below are sorted by frequency, the ones at the top are asked most often.