The best game I played as a teenager with my friends was 'guess the flavour'. Me and a group of friends got together and bought about 20 different flavours of crisps, we then opened them all and placed them into a bowl (still in the packet). One of us would be blindfolded and the bowl was spun. The person who was blindfolded had to pick out, taste and guess the flavour of the crisp. If they guessed correctly then they would choose another person who then had to share a secret. If they guessed incorrectly then they themselves had to tell the rest a secret. This game kept us occupied for a long time and at the end we gave each others makeovers (makeup and hair) in the dark! I still keep in contact with some of them and they still remind me how great these games were!