The Lord's pastimes in different kalpas

Every day we tend to have the same schedule or routine. We wake up, we brush our teeth, have a bath etc. Yet everyday there is some small variation in the way we carry out the routine, it is never identically done. Similarly, in every cycle of yugas, Krishna performs the same pastimes with the same incarnations, but every time He carries out the mission with slight variation. So this is why there are different ways in which, for example, Lord Narsimhadeva kills Hiranyakashipu according to different cycle of yugas.

(Source: H.H. Bhakti Charu Swami - QnA - ISKCON Pandava Sena Retreat

Simhachalam, Jandelsbrunn, Germany, Aug 2005)