The Sri Lankan Sinhalese and Tamil New Year (Aluth Avurudhu” in Sinhala and “Puththandu in Tamil ) is a national festival which has been celebrated for centuries. The most pronounced areas of the new year festivities are food, games and the rituals of goodwill.
The new year games can be categorized as indoor and outdoor games. Some of the indoor games are bello (sea shells) and kaju (cashew nuts). The outdoor games are havari hengima (hiding the wig), chaggudu and kotta pora (pillow-fighting), kathuru oncilla , ankeliya , olinda keliya, eluvan keliya, mevara sellama, raban upatha, buhu keliya, muthi gesilla, rena dela del, muthu keliya, onchili varam and mee sellama.
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http://trip2lanka.com/2014/04/sinhala-and-tamil-new-year-games-in-sri-lanka-aurudu-kreeda/