Games like Starlight X-2: Space Sudoku

Games like Starlight X-2: Space Sudoku include Zup! S, Hexcells Infinite, Hook, Hexcells, and Is This Seat Taken?. We matched them by the tags players give Starlight X-2: Space Sudoku on Steam (Puzzle, Logic, Replay Value, Relaxing, and Singleplayer): closest matches first, and among equally close ones the better-known games.