Responses
'Little mushroom' and 'The Hunter wants to live quietly' have bits of similar vibe to global examination and if you're into novels, try 'the earth is online'. If you're into the death game theme try 'Alice in borderland', it's an amazing manga
I can only think of 'Lost in cloud' which is similar to checkmate
Does anybody have any recommendations which are similar to Checkmate or Global Examination?