I was addicted to MetaComp for two full working days. (COVID-19 had closed all of the schools in Taiwan, but teachers still had to show up. So this was a godsend.) I found the puzzles in MetaComp challenging but not frustrating. The overall game is thought provoking and obsessively fun. I'm slow on the uptake, so I missed a crucial piece in my first review. n-n very kindly gave me a nudge. He makes some of the most playable games on the Spanish IF scene. I personally love what I call "toys" in IF, and n-n's games always include neat toys to tinker with if you get stuck or if you've already beaten the game.