It's Showtime events were cross-promoted with K-1 and other European promotions from Italy, Belgium and England. On December 2007 the first season of It’s Showtime Reality Show was broadcast on Eurosport, featuring 19 fighters from all over the world. K-1 partnership continued until K-1's deepening financial problems and Simon Rutz claimed in January 2011 that some fighters from It's Showtime had not been paid for fights in K-1.
In March 2012, It's Showtime announced that EMCOM Entertainment established the new company K-1 Global Holdings Ltd. in Hong Kong. EMCOM/K-1 Global's agreement with It's Showtime made many fighters under It's Showtime promotion sign contracts to appear in upcoming K-1 Global events. However, it was announced in June 2012 that It's Showtime was purchased by Glory Sports International, eventually to be merged in their new promotion GLORY.
Kickboxing fights were conducted under K-1 rules rules 3 X 3 rounds and title fights 5 X 3. It's Showtime had eight different weight classes MAX 61 kg, MAX 65 kg, MAX 70 kg, MAX 73 kg, MAX 77 kg, MAX 85 kg, MAX 95 kg and Heavyweight +95 kg.