Complex sentence: In 1993, Nintendo themselves arrived in Brazil and released the NES with American cartridge slot, being manufactured by Playtronic, a joint venture between the toy company Estrela and Gradiente.
Split into simpler sentences: In 1993, Nintendo themselves arrived in Brazil and released the NES with the American cartridge slot. It was manufactured by Playtronic, a joint venture between the toy company Estrela and Gradiente.