Pretty barebones, but the fundamental mechanics of Polarium are solid enough. Polarium features 100 line-tracing puzzles and an endless "challenge mode" that's kind of a dud. The soundtrack is literally just the same three synthy notes repeating forever and ever, so probably turn the volume down. Ultimately the game could have used more puzzles and a more robust hint system, but I generally enjoyed working through the available puzzles.

If you like Polarium, try: The Witness