14 hours in, and the main 198 levels are, finally, completed! There were some real head scratchers in the last few sets of puzzles, but thankfully my “tactic” of leaving a level I was finding impossible, then returning the next day, seemed to help.
Of course, there are now the 50 or so bonus levels, and untold user-made levels to work through, so it isn’t the end really.
Fantastic game, well worth the £5.40 or whatever it was, and far more fun and much longer and more playable than Sonic sodding Generations.